It is alright. Wish it was mine. I have an equally nice receiver, perhaps even nicer. A sansui 9090Db with Dolby FM! That is a rare beast, that goes for about 1,300.00 these days on the used market. I will overhaul it some day. I'm putting it off as I don't want a hernia lifting the beast! (that and the fact that it works fine except for noisy switches and controls)
+Donald Ellett My McIntosh is over 50 and it still works. Has developed an intermittent popping sound in 1 channel, I guess one of the old tubes is starting to go, or a capacitor is going south. One of these days I will put it up on the bench. Not a super high priority right now as I am not using it. I have a modern tube amp that sounds superior for music to the old one just due to better, higher tolerance resistors and capacitors, so I use that amp (A Yaquin FYI) for my CD player and turn table.
Really love your videos. I have watched loads of them and I am amazed how you can just identify circuits so fast, also I shit myself when the bang happened then laughed. Keep up the nice videos there amazing.
My dad, now 80, had an old receiver sitting at home - one day it stopped working so he replaced it with newer tech, but couldn't bring himself to toss it, so it just sat, for years. I found it and using videos like these was able to repair it... lucky me, a G9000 in mint shape 😁. Turns out he was a Sansui dealer back in the day. My aunt has a 9090 that I hope will find its way to me at some point also.
Many thanks for the video! As soon as you mentioned the little preamp jumper jumper on the back i knew that was why my amp didnt have any left channel! :)
A fine presentation there. It seems sometimes high value carbon film resistors go much higher in value after much use.. In the days of tubes, there may be a 1 Megohm resistor going to, say, 50 Megohm, which has a significant effect.. With faults of this type, you have the benefit of reading the color code to ascertain the correct value.. I like the idea of a link from the 'tone and volume' stage to the power stage... The Akai AM UO3 stereo amplifier has this too... I use it to connect a remote control Digital radio, with Bluetooth directly to the power stage...
Been trying to buy that unit for years from its owner. He got it for free but won't sell, and the kicker is he's definitely one here so he can't even hear stereo.
Another cool repair! It would've taken me hours before I would be going after that resistor, I just always assume they will be fine. (I'm 23 and just starting to fix electronic equipment, I really enjoy watching a skilled and very knowledgeable person do these 'uneconomical' repairs. Absolutely hate the throwaway mentality, let's hope things will change!
+Koffi Banan That resistor was the second part I tested after removing the board. It wasn't just luck either, as soon as I determined that the repay coil was not open (as that happens) I checked the transistor array (that black part that looked like a SIP IC, but what makes it different it that it is only a transistor array without internal resistors and other circuitry) for shorts. None found I started looking at the support componets.
l have noticed you are a good technician you quickly identify the problem. l have also a Toshiba SY330 /SC330 and the left channel makes a bad sound when you lower the volume. The is like an old tele that has lost a signal
I have seen that the amplifier still had the original "Marcon" filter capacitors that are working on borrowed time. And yes, all audio equipment were made very good back then. Especially the Sansui, Pioneer, and Marantz brands in my opinion and in that order were the best made in Japan.
+service1956 If it was mine I would be re-capping it, but it isn't. When I gave him the bill for this repair he whined and complained, I can't imagine the whining and complaining I would have git if I even suggested he spend a dollar more on it.
I’ve purchased some old Marcon capacitors in Ishikawacho, I thought nos parts are also good especially made in Japan. But I didn’t realize what I bought was “capacitor”, it leaks really hard when charged even within spec. I took me very very long dealing with strange volume curve on pot until found that it was failed capacitor.
Very good job! You have fixed it well! I hope i can also find somebody to repair my Sansui AU-D33 Integrated Amplifier. Mostly of the electronics products now are made in China and are all disposable.
I noticed the relay pin didn't have any solder on it....lol I was screaming .....that pin needs solder :) Your video`s crack me up .....lol scared the bejesus out of me when you were cranking on the volume and something fell.....lol Awesome job as always .
+Navpers 47 Yes I know I left it open to see how many would catch it.My but set fell off the shelf about 9 feet in the air and whacked me on the head on the way down. Have a nice shiner today.
The worst time for that to happen - just when you switch on a mega amp after fiddling around, hoping you don't hear a pop, with lots of smoke. I'd jump through the roof if it was me.
I sold this same unit for $150 years ago. It had a faulty channel. It was quite a monster in its day. I believe it was a $1200 receiver in the 70's. At 150w rms, it was something.
I think these were made by Technics and those were made by Panasonic. Kinda strange the way they had a brand that made many different units for other companies. I remember MCS, I really liked their components. I believe they were Technics as well. Nice to see a nice old beast of a receiver back up and running again. As you said they were made to last.
What a beauty they definetly dont make them like this you must have a warehouse of great and vintage gear enjoy be safe and careful out there and thank you for the great videos
@@12voltvids well you always surprise me every time you post a new video everything is great and everything you touch turns to gold and is brand new I am still trying to fix my teac a1200u it had been redesigned on the power board no fuses as well as only one switch for the break solenoid my e is grt122@optonline.net if you dont mind corresponding I would really appreciate it thank you for your time and be safe aand love the videos
Nice video! Always impressive to see people knowing good old electronics like you! I have a 1977 Toshiba SA-320 in pretty good condition except for the right channel. It's lower than left channel and it making noise... Probably a recap job but I didn't found any information or video about it. Do you have an hint for me? Thanks a lot!
I like to get the service manual for whatever it is you're fixing and follow along or maybe try and figure out what might be wrong. I must say the service manual for this Toshiba is probably the best I've ever seen. Now I'll have to get one for your Sansui. Was just on eBay and someone is parting out a 9090 so if you needed any switches or controls maybe take a look. Another great fix! Thanks
@@12voltvids Thanks I was wondering which one you might have after I saw service manuals for 9090, 9090D and 9090DB. Glad to hear your Sansui is ready to rock. Can I ask if we will see the LuxKit A3400 again, or maybe I shouldn't ask? Have a good day.
@@kwils6685 mine is the 9090db Dolby FM. Yes the luxkit will be featured again when I get off my ass and work on it. Been very busy and have still don't have a schematics.
+John Schroeder When you have been working on electronics as long as I have, it is simple. At least this stuff is. 32+ years as an electronics tech. 20 at a warranty depot for Sony, Panasonic, Toshiba, Mitsubishi and RCA. Its a dying industry, but a few of us dinosaurs stick with it, but not to making a living today. Couldn't if I wanted to. Throw away society, but some good old pieces such as this are still being serviced.
And exactly this is what makes me angry.Today you are not buying electronic stuff but you are paying just to rent them for a specific period with a preset expiration date.And in the effort for even lower prices in the appliances they dont have even spare parts to use to the so called authorized service centers and find cheaper just to replace the appliance as long the warranty period is being valid.
Those capacitors are huge! Did they require discharging? A great video and very informative. That amplifier was well built, they certainly knew how to make robust electronics back in the 70's even if they did weigh a ton. Well done getting this working again glad that it was only a resistor that needed replacement and nothing too major.
+DLiberator78 Those caps can hold a good charge, but the voltage is not that high. 45 - 55 volts each, so 90-110 volta DC potential difference between the + and - rails. Saying that, they store enough energy to blow the tip off a screw driver if you discharge them with a dead short. They do discharge relatively quickly though after power is shut off, because the circuits are still powered by them, and this will discharge them within a few seconds. If they were isolated from the load by a relay that cut power to the circuit when AC was removed they would hold their charge for quite awhile, but that isn't the case. The relays cut the speakers, and let the caps discharge through the circuitry. That is the reason for the speaker relays, so that as the caps discharge there wouldn't be DC voltage sent to the speakers caused by voltage imbalance between the + and - supplies as the power supplies discharged.
Thank you for such a detailed response. You are a fountain of knowledge and I have learned a lot about electronic repairs from your channel. Keep up the great work. I love your videos.
great video i have an old receiver from that same time frame mine is the old hitachi sr 2004 very heavy it still works have it hooked up to 2 sony grand 7 speackers from the same time frame with a new onkyo and a sony cd player the only thing that i would like to do is clean the volume control and the other controls they are just staticy thats all but she still has lots of power and you are right sir they dont make them like they used to i also have 3 older sony receivers as well still work once again thank you for a great video i watch them all the time that one with the water main that broke was really good but that happens once again thank you
This Toshiba is like pornography for vintage audio lovers. Damn sweet receiver. Gotta keep the ol' girl running. I personally would have replaced the matching resistor on the other amp as well just for good measure since it also has the same amount of time on it. And yes, nothing today is made anywhere near this good, sound or build quality.
+WaybackTECH If it was mine I probably would have, but this is owned by the cheapest SOB.I charged him 50 bucks for the repair and he whined and complained.Any shop that he would have gone to, it would have been minimum 90 just to take the top off it.
***** oh! ok ya i could have read into that wrong. I think there is a lot of these units that would qualify as being worth fixing if they were not technically worth the same amount, after all even if you got another one, it probably would eventually have the same problem anyway, and this older stuff just goes up in value too
I wish youtube existed 20 plus years ago and service people recorded their work so the customer could go back and watch the repair and know they were not being scammed. So many repair shops scammed people back then for hundreds of dollars over something simple like a line fuse blown.. The biggest scams were and are still today the automobile repair shops though..
+ElfNet Gaming When I was in the business many would have called me a crook for charging 125 to re-solder the ground connections in all those Sony tuners., however the good offset the bad. There were many times when a tough dog would take hours and hours. I remember struggling with a Pioneer 70" projection set for about 9 hours the first time to find 1 cracked solder connection buried deep in the chassis. Now there is not way I could charge the customer for 9 hours @ 80.00 an hour. That would have been 720.00 in labour. So they were charged 150 for the repair, as was the next 30 or 40 of those sets I saw in the next year an a half that they were all failing. It only took 15 minutes to fix the fault once it was identified. Same went for all those Sony tuner failures. They took about 15 minutes to fix, but in the early days, before the fault was figured out, it was replace the tuner at a cost of 110 for the part and 80 for the labour.I even had one smart ass customer that wanted a break down on the cost because he got a bill for 150 to fix his TV. He went to the media, and they tried to set me up with a simple blown fuse. Of course the blown fuse trouble generated a 29.00 labour charge, the shop minimum. But when asked about the 150.00 for a broken solder connection, it was broken down as follows.Re-solder broken solder connection $5.00. Knowing which connection to reflow $145.00! There was no comeback for that. Also back when I made a living repairing electronics I did not share my knowledge with anyone, especially the guys that worked in the shop with me.Electronic service engineers, which is what we technically were, a technician would be what I would call my assistants, the guy that took the back off, and did minor things like replace belts and clean controls. I was working at an engineers capacity. I was the one that could read, and understand the schematic, and knew how the circuit worked. That is what put food on the table, and I wasn't about to show some noob the tricks of the trade, that had taken me so many years to learn. So we had to charge enough to earn a comfortable living, and pay the expenses of running a retail establishment.I am not in the business now, at least not as my main source of income. I work in a totally different industry now, but I still live in the same community that the shop was in, so many people know me, and still bring me stuff to fix.The purpose of these videos is to hopefully get people interested in this field, as they certainly don't teach it in school anymore, and the post secondary courses just don't exist anymore. At least they don't for consumer electronics.The little bit of beer money I make from RU-vid doesn't hurt either.
I work in IT and communications so most of my repair work is done out in the field at tower sites, I get the occasional radio in for repair here and there and I usually charge a flat rate plus parts. But the other radio shop across town just flat out gets away with highway robbery, charging $150 for a battery pack that costs $10 at dealer cost.. I understand mark-up but that is just insane.
+ElfNet Gaming You want to talk rip off? Monster cables. That is a rip off.The shop I used to work for made a killing from monster cables, and the sales dept would convince people that a 150.00 cable that cost 14.00 dealer cost was going to make a difference in picture quality.I locked horns with the owner by telling a customer that their 3,500.00 DV cameras needed a new 600.00 digital board because the DV connector was ripped off the board from using one of those stiff monster cables as opposed to the 40.00 Sony cable. The customer cam storming in demanding the shop refund hos 150.00 for the cable and fix the camera for free. The boss was not happy with me for telling the truth, as he made a killing selling those stiff cables. Had a bunch of TVs get their HDMI connectors snapped off by those stiff boutique cables too. To this day people get ripped off on headphones, batteries and connection cables.
I had a Toshiba beta vcr, very nice. I used to wonder if Sanyo was Toshiba's cheap line? Either Sanyo or Toshiba made stuff for Fisher in the 80s. I've liked all the MIJ Toshiba stuff I've had through the years, including a very nice turntable and I still have a pair of 12" 3 way speaker systems. My led flat screen is T, no problems for many years. I think T was rebadged for some of Sears too. So you probably had to charge the customer at least one hour for a 2 cent resistor! My brother paid a tech about 300$ to recap and an IC chip in his T 36 CRT TV set. He said it was well worth it to him, although it was about 40$ for parts, that know how and labor was worthwhile to him, he really likes that 10+ year old TV set that weighs about 300#. I have a more basic model 36" T CRT set that I got at a junk store very cheap, fantastik TV. Many feel that Technics, Sony, JVC, etc. are better Jap rigs, but Toshiba is also better quality stuff, and often overlooked.
+umajunkcollector Fisher used to be a quality American made brand. Then Sanyo bought the name, and things were never the same. Toshiba and Sanyo 2 completely different companies. Sanyo made a lot of semiconductors as did Toshiba. The top tier Japanese companies were Sony, Panasonic, Hitachi and Toshiba. Sanyo was a second tier (cheap) brand, and they made products for Sears, as did RCA.Panasonic used to make VCRs for RCA and then RCA changed to Hitachi.
Great video. I'm having some issues with my not so spectacular Yamaha R-3 receiver the right speaker channel cuts in and out randomly. Any idea on how to I would go about fixing that? I tried cleaning all the pots with contact clearer still on luck. Reply
This is the same exact model that “Shango066” did about a week ago and it was in poor shape, and it got busted since he first got it. One of the knobs are broken, and it has no power to come on. Great to see this bestie model back to like.
Those capacitors are monstrously huge! Strange to have the transformer covered like that. You have 2 workshops? That's one in the garage, but where's the other one?
THAT WAS SANSUI, NOT SAMSUNG, LOL! I have an old 70s Sony integrated amplifier rated at 100w/ch that I admittedly abused most of the time in the past 35+ years that I've owned it, and I bought it used. I have an old Fisher quad amp that I like alot too. I like Harmon Kardon, you get a lot of bang for the buck. Don
great video, I m in Boca Raton Florida, I have a Pionner stereo receiver ( 25 y/o) , love the sound but the left channel has no sound, do you know any local repair center or tech that can look at it,?let me know , thank you
Vs-sp -57. (Model number )Hi i am an electrician getting problem with left side input playing very low but right side playing loud and ok, also interchange the input audio signals same result.It has 4 output transister (c5198) all test ok and 4 small transister 2 (c945) and 2 (c733 not too sure if it's correct number) is these small ones the driver ? it test ok.When volume turns right up, left audio input barely plays (very low).Sir can you please help me out.Thank you very much.
I have an AS -400 that I bought from a guy. I listened to it a lot, then one night while listening to an album, i heard kind of a loud POP! then nothing. I checked out the fuses, they were good I visually exclaimed the caps. Any ideas? No sound. The dial lights up. there is power. But no sound. Any Thoughts?
You do a very excellent job figuring out the problem and i have always loved fixing things like electronics. Any tips on how to go about fixing things? Expecially finding the problem?
can anybody recoment who to take my vintage stereo for service and repair. got and old pioner that has a cheannel down and a MCS 3275 that need deoxidized and possible cap upgrades ????
HI love you video I am wondering if you can help I have 2 sharp vertical record players 80s retro which play both sides of the record or LP with turning over they have no amps in them I am not getting any sound from the LEFT CHANNEL on both decks and a humming sound there is a relay the only one for side A & B which clicks when changing sides could this still be a bad relay even know side A COMES OUT 2 SPEAKERS
bought a toshiba SA-5000 from a guy, it was working (according to him) 10 years ago.....i plugged it in and it powers on but it has no sound coming out of it. Any advice would help, Thanks
optonica model s-501 i bet thats what wrong with mine something in the driver board , outputs are ok ,unfortunatly it would cost me 200 to ship it all the way from ohio to you but would love to have you work on it
just wondering how you got your education did you sign up for a course from the Popular Mechanics magazine or did you actually go to a tech school to learn what you know appreciate if you could answer I know you're busy
zorroon milkavitch Actually I went to bcit and studied television production. I had worked at a TV shop when I was in school. I knew owner from when I was about 10. He had been a radar engineer during ww2. I went to the shop for about 3 hours every day from about grade 7 through to 12 and learned enough to take the journeyman red seal challenge test which I passed easily. I then finished school and decided I didn't want to work on electronics and wanted to get into TV. Studied that but there was no steady work local. Worked for a community station, did an internship and summer relief work. Saw an ad for Sony looking for junior technicians. Applied for the job got it. Sony put me through the VCR factory training course. Sure it was betamax but same principle just different mechanism. Did that for a year and they wanted me to relocate to other side of country. Left Sony and ended up in a small warranty depot. Over the 20 years I was there took constant manufacture courses for new tech. I forget how many buy between 50 and 100 I would think. 5 or 6 courses in classroom a year. I filmed one of them and put it on the channel. A super beta course. That day I filmed was the theory day. The balance of the week it was hands on taking the machines apart and finding planted faults that the instructor put in. I left the electronics service business in 2003 and retrained in the telecom industry where I work today. A few years ago I got the idea to start the RU-vid channel. I had, during the time I worked in the repair business started a video production company and produced hundreds of high end multi camera shots of weddings, live performances, theater, TV commercial and infomercial and corporate videos. When my business partner died in 2007 I wound down the production business. Then I got the idea for the RU-vid channel and put my production skills back to work, except now I do everything myself. I used to just be the guy running the camera and editor. I hired the talent, voice over talent, additional camera people ext. Now it is just me. Instructor, camera operator, editor and voice over.
Yep I like dat design also , and I'll bet a quarter to a dollar dat the road map is designed well also in the service manual... Great trouble shooting for sure ..... I just can't believe dat certain people will troll your channel with the thumbs down, I have a couple downers on my 2 channels also, and I don't let dat get to me at all....... Love, Peace and Crackling grease Mon Ami..... I'll see ya in the next one....
@@Budro4764 yes I know. There are many that I have hit the mute button on so they can't comment anymore. Some come back with different names but it is easy to figure them out and I and my moderators that patrol the comments have itchy ban fingers. Frost hairs found out that quick when he started calling me a liar when he confronted me about deleting his post. It was actually my moderators that nuked his post and many others in the old films from the 50s. There were some comments that were racist and offensive and they were deleted. Then I get harassed as to why the comments were deleted. Thing is I have 2 moderators on my channel and they are actually faster then me at removing comments, but as the channel owner I am the one lined up in the crosshairs when someone gets upset. I ignore em all these days.
when you were talking about how the owner wants to stick with that receiver because he knows if he gets a new receiver, it just wont come to the quality that old legend is made of, its the same thing that im doing with my hunter original ceiling fan, its an absolute tank of a ceiling fan, made of about 45 lbs of cast iron, and I know that any of these ceiling fans of todays market is absolutely garbage if I were to get one of them, things back in the day were built to last and its so sad that you just dont see quality in todays world anymore. :\
+Tyler Hanson Absolutely I have an old washer, a Kenmore, made in Canada and it is at least 40 years old. Was left in the house when I bought it in 93. Dates back to the 70's. My wife keeps wanting to get a new one, and I refuse. This thing is built like a tank, and uses about as much energy to run, but it never stops. My sister on the other hand wanted those new designer "red" front loading washer and dryer made by the little girl company. Barelt 5 years old and it is broken. She has been bringing her laundry over to use our old washer and dryer here because her fancy one in on the blink. I think a lot has to do with the country where products are made. Get a domestic made appliance, or electronic equipment, and there is a sence of pride by the well paid workers that built it, and they put in quality well made parts. You pay a premium for this though. Then there is the churn out 10,000 units a day from some mega factory over in China, where everything is plastic, and you are lucky if it lasts past the warranty. Who is to blame? We are. We demanded cheaper products, and manufactures looking to keep their profit margin just off shored the production to the land of cheap labour, and we end up with shoddy products.
I have an amplifier that when you turn it on there’s no sound from the right channel. You have to wait for about one minute for the sound to slowly come up from that channel. What could be wrong ?
@@zloben9000 Assuming that the meter isn't damaged, but in this case the meter is damaged. There is a piece of metal inside the meter stuck to the magnet and jamming the voice coil on the meter, so it won't go down all the way. I wasn't going to take the meter apart. The owned didn't care and wasn't aout to pay to replace the meter or attempt to fix it. Guess what, most people don't care about little things like that. The guy that owns this uses it in his garage!
