I love it when you show exactly what to do. Or, at least give us an idea where to look. I will never be at your level with this kind of thing, so I always appreciate it when you give us the little tips and tricks. Regards, Tom
If not overdone, percussive maintanance can be very effective for fault finding. About 10 years ago I gave my father a broomstick as a had no time to fix his TV. He used it for weeks like that. It was a second "remote control". When the vertical deflection went out, he slammed the TV on its side with the broomstick, and it was good for a few hours. Fortunatelly the connection never failed while he was in the bathroom or smoking outside, otherwise a nasty black line could have burnt into the CRT. Finally I fixed the TV, and we still have it in storage.
We still have an SX-312R inherited from our late brother who'd bought it in in the early '90s. We got in '95. That wee beastie sure looks like a 'keeper' to us...
I have a sx201 that i got for christmas over 25 years ago and it still works great and i love it and it's very similar to yours except i don't have a remote volume control
Sony sorta did it, but they did it differently. On their receivers from at least the early 90s They cut the panel out, then flipped it over, and it screwed in. They did not do the cut the tabs thing. I also found an older 80s Sony str vx1 where literally The whole bottom panel was screwed in. (have not figured that one out yet, the right channel on both speakers A and B sound like it is farting, I switched the speakers around and ruled those out. It uses a Sanyo stk460 amplifier IC.) This is one of the reasons why I don’t really like more modern surround sound receivers without those service panels. (Onkyo, Yamaha, ETC.)
I remember when we used to bash the crap out of camera 2 in the studio because it kept acting up and the engineer couldn't seem to fix the problem. The red registration would drift. You can see how bad it was if you watch the chuck berry concert I posted. I worked on that production and I was operating that bad camera. Used to have to give it a smack on the right side and the convergence would clear up for awhile.
If I were to buy something old and good hifi, I would not buy the Pioneer SX-240. There are many other things that are much better that you can buy used!
You banging on that box to turn it on and off reminds me of the old movie where Pa Kettle changes radio stations by bumping his rocking chair on the floor next to the radio. Circa 1949
Mine still works great but the digital display goes dark. Stereo goes very loud. One year we shorted speaker wire on one channel. We had to remove the transistors on the offending channel to get the powersupply to click again. Two issues i had was Cold solder loose leads on RCA inputs Also the "A/B Speaker switches weak contact so I permanantly jumpered them
I've seen this method of bottom panel removal on microwave ovens. You can change the turntable motor after cutting out and screwing back a section of the bottom plate the same way you did on this amp.
I had a pioneer very similar and the output was 125 rms per channel. Not sure about what the wattages on this unit would be. But my unit was pretty nice. Miss it.
My Yamaha amplifier with built-in radio tuner must have a memory storage capacitor,,,as I had left it disconnected for up to a week,,,and the station preset memory was still saved in place for the tuned radio stations here.
Hi 12volt !! Cool name 😎 So I bought a used Pioneer sxv90 in great shape cosmetically for 25 $ plus shipping. It turns on and lights up and the relay clicks. The guy sold it cuz it didn't make sound. It didn't have its preamp jumpers plugged in so I bought some but it didn't rectify then situation. The vents get warm and actually feels a bit hot to the touch. I had this same stereo as a 14 year old kid in the 80s. It was my 1st stereo. I'm popping the tip on it today to check the fuses. When I press the speaker select A & B I can hear a slight audio pop so it's wanting to play sound just not doing it yet. I thought I'd ask u where I should start
Plug an open cord into the main in and turn it on. Touch the top of the connector. Do you hear it hum? If so the power amp is working. The problem is in preamp. If no him then the power amp has a problem. You can plug the preamp our into another amp to see if it is outputting a signal.
@12voltvids Hey thank u for helping me. I had it on today for about 30 mins trying different things. All the fuses are good. One thing I noticed is the relay click a few seconds after turning on sounds very dull compared to a nice click., plz. Excuse my novice questions. I'm trying to comprehend your message. So I can take a bare speaker cable and attach it to the power supply hot
@@RockCity1111 not a speaker cable. An audio cable. You know where the jumpers go between the preamp out and the power amp in? There. Plug an open rca audio cord into the input and touch the tip. You should hear a hum out the speaker if the power amp is working. This is called isolating the fault so you know where to start looking.
Hmm flappy hot things, never a good idea :-(. Not a bad little unit, i've not had much trouble with pioneer hi-fi, only a caddy styled cd player that failed to read disks and cleaning it had no effect, was a bad one. The lazer was ill.
I get a few pieces a week in, and get donations of unwanted equipment. I still have some inventory to look at that I need to deal with so I can get rid of it.
hello, I am writing to you from Italy, I am a Pioneer lx90 owner, my beloved amplifier has a problem, the lcd display fizzes continuously, how can I solve the problem? thanks Domenico
hi, I have a pioneer VSX-522-K. only get sound through front speakers when set to pure direct, all other settings give sound through the centre and just one front speaker. all speakers give sound during test problem persist even after a reset. please help.
Hey...l have this same unit ...l just took it in for repair for the same reason...never thought about banging it on the side...Could of saved myself $100.00
Hello 12volts vids, my teac av receiver ag-d9260 everytime I turn the volume...loud tic sound on the speaker audio comes on then turns off once I adjust the volume again. 2nd thing is once audio comes on, even the vol reached its max sound is same as vol no.1 setting. And vol is kind of low but sometimes kind of med loud but not as controlled by vol adjustment. Same vol response both remote and the manual vol control. Hope you can help. Thanks in advance.
No a brilliant design for a bottom plate is to put an access plate pre-screwed onto the chassis. Which meant it could be removed via screws and put back with screws that already exist on the unit. Not have to find screws to fix a plate back onto the unit. Now that’s a brilliant design.
Those 4 screws cost money. They take an extra step to attach. This adds to cost especially if it meant having 1 extra worker on assembly line who's only existence on earth was putting that bottom cover on. Since the majority of these probably never needed service and they were made at a time when there were service techs everywhere this cost cutting measure saves the company a stack of cash and since they were generally being serviced by an engineer who doesn't mind cutting the tabs and finding spare screws. It also keeps the curious out of the bottom. With screws anyone can open it. This also provides proof for warranty that nobody has been in the bottom.
12voltvids I agree with that. If it’s a warranty item and does give you indication if it’s had work done on it. Just as a personal thing. I like to get a screwdriver. Undeposited screws and have the plate off quicker than the kettle boils. Haha
Hi, Just purchased a (Yamaha xm4220 power amp) and red light protection is on, channel d clip light is red also - do you know what this could be? any help would be appreciated. Thanks
When an amp comes in and customer asks if I think it will be difficult to repair, I turn it over and look for the bottom hatch. If not there, I answer "yep"
@@12voltvids I applied an oil-free contact spray..Could the dust and dirt inside the switch be clogged? Lock nails are working. It just doesn't throw back the bow.Can it rinse with natural degreasing detergent used in the kitchen?Thank you for the answer.
@@suataydemir9144 some of these contact sprays attacked plastic and causes it to swell which jams things up. The only contact cleaners I use are ones that specifically say safe on plastics. Not all are.
Hello friend, good day, can you help the receiver SONY STR-D515 does not work PROTECT, you can help me, how can I contact you by whatssap or mail, I'm from Mexico, greetings.
If I were to buy something old and good hifi, I would not buy the Pioneer SX-240. There are many other things that are much better that you can buy used!
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