Peavey is a victim of their own success when it comes to these old CS series amps. A lot of pro sound people are snobs and say "Peavey is junk". But what they are talking about are amps that are close to 40 years old in some cases and have never been serviced.
Yes was thinking the same. The old Peavey amps are known to be really good and reliable... but yeah there is always a lot of uneducated opinions in the audio field, especially in the "pro" and "high end" world lol
I've serviced a lot of Peavey over the years. Wasn't always the best sounding gear. However the reliability was good and mechanical design was solid. Their customer service was always fantastic too.
Hmmm... I don’t know about that. I’ve seen a repair video recently that got me absolutely appalled, where *a freaking burnt LED* took out the whole unit. It was from the IPR series, if I remember correctly. P.S.: yep! Here you go: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-HCrcbHSnogc.html . It’s simply unbelievable!
Those peaveas of that era are total BRUTES! you could put a dead short between each channel and it'll just go into protect while there's a short! I've seen people drive speakers of all ohm loads, wattages,etc.. and that amp will take it all.
The CS1200 and 1200X are one of my few favorite peavey products. They’re great amplifiers and they sound great if you modify the pre driver stage a bit. They sound a little flat stock. Same thing with that same era of the CS800. Great affordable amps.
I used to run 12 big racks of these back in the day.. that was pretty much the stock fault.. the fan control circuit failed.. they went bang due to heat.. which is why you often see them with small strips of paper stuck in front of the grills on the front in pictures of big rack mount systems running these. Otherwise they were great amps... but damn heavy when you have 8 of them per rack !!!! (make sure to buy the venue lifting crew some beers if you like your gear in one piece after the show)
When I had a CS series in the shop with a problem on the amp board, it was common practice to replace all the diodes on the board. Diodes are cheap, and they were a high failure part in those.
It always gets me that one simple component, like one diode, can trash a huge amp. I’ve had this endless time with all sorts of equipment. A part that costs pennies trashes a valuable piece of equipment. Anyway, that aspect adds to the personal satisfaction when the job is done. Thanks again for a great video.
Why not hook it to the speakers to see what it sounds like? It looked like you checked for DC on the outputs etc. so it probably sounds fine and works fine.
I love the old Peavey amps I have a PV 1.3 k rebuilt the whole thing all new resistors transistors diodes caps filters all the way down the line it took me about a month to rebuild Plus also waiting on parts. when you order parts from PV you have to look at the schematic and give them each part number it's crazy.😂 Got to know all the people at PV pretty well. Grant Brown said to me why are you rebuilding this amp when you can buy a new one with a lot more watts and I said because you can't beat the old PV amps they're built like tanks.😁 The PV 1.3 k weighs 100 lb and it has one huge transformer in it to run both channels LOL. 2,110 watts at 2 ohm load it's a powerhouse. I have a lot of time and money in it and I'm not getting rid of it for nothing 😂 if I was you I would keep that amp and never get rid of it. Brand new when the PV 1.3 k first came out the price tag was $5,000.
Peavey are pretty good if you contact them asking for schematics & service info. I emailed them for info on a bass amp, sent me the schematics with the proviso I didn't re-publish them etc.....DA
Yeah when I rebuilt my PV 1.3 k. Peavey sent me all the schematics so I could order all the parts.When you order parts you have to order by the part number on the schematic. You can't just tell them what part you need 😂
I used to do guitar and amp repair in the late 90s. Peavey didn't make the best sounding gear, but it was good enough. The upside is that they durable as hell. The only problem I've ever had with 70s through 90s gear were cold solder joints or blown speakers. Brings back a lot of good memories seeing this.
That statement at the beginning is funny as I currently have 2@ CS 1000X's bridged running a 15" sub each and a CS 800X running the mids and highs in my room as I love the quality and feel of my music, plus I use it as a guitar amp. as well as I have a 24 Channel Mixer, Behringer X-Over to separate the lows from the Mid/Highs
great video..great instructor,(although first 10 minutes seemed to be waist...you proved a short so how would the triac ckt going thru thermo switches cause that???maybe no primary voltage but not a short...anyway from then on excellent..im trying to repair a peavey -2600 and a gps 3500..., 2 questions..will a cap that is failing esr also test bad with cap test found on most dvm,s? can you talk about peaveys ddt circuitry, because I have a ddt light always on and cant see the ckt labled in the schematic?i know it haS SOMETING TO DO WITH COMPRESSION AND LIMITING INPUT..BUT HOW DOES IT SENCE?
The CS1200 is a heavy beast. My channel gain knob broke off at about 90% and I eventually sold it along with some Cerwin Vega horns with 15" woofer PA speakers. It was a loud system.
Can you tell me or recommend, where to buy this peavey cs3000 Circuit Board, because it just burn. I can see the model was P2500AMP on the board. Thanks
What I love about electronics is that if there's something wrong with it it's usually a really simple and cheap fix. Most things that end up not working are due to electrolytic caps drying out.
Appreciate your video alot it helped me with my repair to my cs1200 , I'm a big fan of peavey most of my gear is peavey and they work real great.Thanks 👍
The amount of expertise and knowledge you possess about this mindbogeling. Very entertaining, eventho i'm no electrician. Seing the way you work, i'd drop my Hifi to you for service any day.
How is it so quiet? Fan speed wise.. I have a Peavey CS 1000, and the fan is ridiculously loud! Always runs flat out speed, and can clearly hear it over the audio, when at comfortable levels in a room
Incredible repair.... gotta give props to amps that are 2 ohm stable.... that's why I like my Crowns. I'm not loading them at 2 ohms, but it's nice to know I could... !
I am jealous. I payed 90 buck for a cs 400, and rebuilt it. what a beast. you have a really big beast. one interesting thing about these amps is the speaker damping factor, meaning when the amp sends a signal, it does not allow the speaker cone to continue movement after the signal event. rater interesting to watch.
It's the same model they have in my local cathedral church. They use it to drive three giant speakers pre-channel. It's a beast. Thanks, Tony. I clicked on the video the moment I saw the word Peavey and 1200.
As Always Tony you are teaching the world how to trouble shoot problems systematically. This is something very few people these days know how to do. Excellent trouble shooting video as usual. Thank you for teaching how to systematically go through and figuring out the problem. I hope the family is doing very well.
It's amazing to watch someone trouble shoot and repair an item at the component level. That's totaly old school. Nowadays the techs just replace the entire board. Nicely done.
any time you even THINK a Peavey has failed to DC on the outputs.... Replace that SAC187 at the output. They are decent amps, rock it. Repaired hundreds of that era CS series.
I used those a lot back in the 80s/90s there's a law, similar to ohms law that applies to those amps. The CS series cost roughly $800 for an 800 watt and weighed seemed like 800lbs. You almost couldn't stop them though.
Tony. Did you ever think of troubleshooting one channel at a time by pulling the wire off the breaker. Just a thought for future troubleshooting as it would be fast
The reason you didn't get a bright bulb with the power amp separated from the preamp is because you opened the feedback circuit. The shorted diode pulled the speaker line all the way to the power rail, but without the feedback there was nothing to turn on the opposite bank and cause a short across the power supply. (Also, no load on the amp, so, no place for the shorted power rail to go.)
the Peavey stuff is pretty rugged, the Spec's aren't great tho this may seem somewhat incongruous, but I run a Crown K2 @ 500wpc/8ohms into Klipschorns that need 3 watts .. :)
I think that amp is made for professional high-end commercial uses such as DJs, Karaoke Bars, Hotel Ballrooms, Nightclubs, Public Address Systems, Conventions, Rock Concerts, School Auditoriums, Performing Arts Theaters, Stages, Studios, Fairs, Bands, and similar applications. That unit was not made for home stereo use.
Stephen Hinkle that doesn’t stop me from using a bogen m600 to power the subwoofers in my home stereo. Which is designed for the same purposes these are. They aren’t designed for it, but boy do they do a good job of it. Just at the expense of lots of energy usage. Mine needs a dedicated 20 amp circuit
What a great tutorial on using a Dim Bulb Tester. Just what I needed. I just cautioned my family and friends on the dangers of AC (even in small SMPSs) and the need for a DB Tester. Thanks! From the look of the grunge inside, I would think that amp had been used as the house amp in a bar. I would also think that it smelled pretty bad. I ran pro sound in the late 70's through the 80's. We had a good bit of Peavy equipment. It was cheap enough, but it all had really harsh high ends. We changed brands, as the company grew. I also had an electric guitar amp head and 4- speaker box. It was solid-state and 60 amps, IIRC. Inside the head, there was a funny little quality sticker that said something like "Made by beautiful virgins, in Meridian Mississippi. No kidding. Maybe someone knows the exact quote. It would be fun to know exactly.
Would a capacitive dropper be a better (less heat) way to power the cooling fan, or would that, somehow, be dangerous? Thoughts/suggestions? I thought the OEM resistor was poor engineering, at best, and, maybe, a little nuts... Your resistor solution was much better than the original and looks like it will work well and be safe.
What Rating Diode did you fit in please bud? I have a Peavey cs 1000, and after replacing shorted transistors and driver transistors, I found there is still a short... Tested the diodes, and they read both ways... And i have no idea what rating diode needs to go in.. thanks
Nice vid. I remember using those amps back in the day at a dance club. We had the CS1200X powering 4 JBL MR15's (2 per ch so at 4 ohms per ch). and then had 4 Silver CS600's bridged powering 4 JBL TR215's. (yes we blew the horns in the TR series several times but woofers were just fine). LOL Then a QSC RMX1500 pounding 3 8ohm 18inch Peavey Scorpion subs. Granted this was in 2001, owner was to cheap to buy decent speakers. LOL But that amp rack was built like a freaking tank. Weighed as much as one to cause I carried those bad boys up two flights of stairs. 1 at a time, 10 min break in between!!!
I am really happy to see your equipments and way you work perfectly with the diagram and explaining about the corns and prons of it and rectify the faults skillfully with all the details do you repair music systems like GR-7(Sony)?
The timing spent on troubleshooting, are very costly labor. Since this unit is old, what is a reasonable customary fees? This is the reason I am using QSC RMX 5050, RMX 4050HD. Avoiding costly timing repairs and after expired warranty. I worked at radio station in the basement and water flooded, completely submerged QSC AMPS, but lets dried several days later, powered ups worked like new. But RMX 5050 made in china having problematic potentiometer (pot), channel’s gain causing static noise when turning pots. Requesting QSC company for part number, but have not respond for week from email.
I repaired a small peavey guitar amp years ago, and inside the power transformer was a heat sensitive fusible link, interwound with the primary winding. In theory a reasonable protection idea but it threw me a curved ball thinking that the transformer itself was open. Shorted that and got the amp working. A real trap for young players!
As soon as we saw the schematic, it occurred to me that if you have two identical channels, you should have been able to isolate bad channel much more quickly.
I picked up a CS-2400 Amp from a friend who does storage lockers he was going to put in dumpster, but he gave it to me. I brought it back to life (bad safety relay) and I use it i my home system ,I got Cerwin vegas D9 on it and they sound great .
You lost me when you say you tested this and you tested that, but don't show any example of exactly how you tested it. You are making assumptions on the skill set level of your audience, without qualifying your video as "for advanced..." in the description. Just my 2 cents worth. Otherwise it was interesting for about 10 minutes until I lost interest for reason just described. Regards...
@@Chokechain1111 jeffbower100, I am truly sorry that you have zero (and maybe negative) class and no sense of professionalism whatsoever. Posts like the one you just made, make that easy for all the adults here to see.
Hi there, I am servicing an old Krell Power Amplifier with a push pull circuit. It consists of 14x NPN plus 14x PNP transistors. What puzzled me was that the PNP ones had an average hfe (Beta) of around 45 whereby the NPN side measures around 115. My first question: Shouldnt the push and the pull side be matched to have both the same level of amplification or is that somehow taken care by the driver setup? Secondly: the amplification range on the PNP as well as on the NPN side various greatly( 16-67 NPN, 105-168 PNP side) is that caused by aging ? Could i still leave it or would it be risky to operate the amp under such condition? I believe it will cause an uneven distribution of load but under normal load that might not be too bad ?
I have one I need to look at. These go through a self check on startup. If it self checks ok a relay for each channel can audibly be heard activating. I'm only hearing one on mine, hence only half is working. Where are those relays located in these units?
I have two CS-900s. Going to take both of them apart and replace the power transistors. One has an issue where one channel clips all the time with only a little input. The other amp sound distorted all the time. So, I'll try that and see what that gets me. Great video!
Damn! wish you did this video about 15 years ago LOL. May have saved me about £200 on a repair bill when my CS1000X blew, Awesome and very interesting video thanks for sharing.
Good job saving the old iron :) And great explanation of the troubleshooting methods and what you can "see" by just using the dim bulb.. i love it, its my favorite and first-to-go tool for troubleshooting almost everything..
3/4 valume settings should put the led lights at yellow turn the nob more /red comes still not peeking the 1 red top red light turns on when u drive the amp going for 2400watts
I had a CS400 and the output transistors were gone, shorted...I did not fix it...I scraped it..and took all the good transistors and various things..and you are right it had one single massive transformer..
And with todays tech you can have more power in an ICEPower 1200AS2 on a single PCB that weighs 1/50th of that, no wonder class D has taken over PA at the concert halls.
