Ampeg Svt Repair
Giacometta Fritchman
We offer the most comprehensivesource of parts for the restoration and repair of both vintage and modern Ampegamplifiers. We also offer a full line of services including: amplifier repair,speaker repair and re-coning, cabinet refurbishment, and custom cabinets. You'llalso find that this site is chock full of useful information to help with yourselections.
Hey, we know you can never ownjust one amp, so we are also offering a selection of parts serving otherclassic amps such as Fender, Marshall,Vox, Sunn, Hiwatt, Traynor and many more. You can order online via our securesystem or give us a call. We ship worldwide. Thank you for visiting and we lookforward to helping you with your parts needs.
British Audio is located in the heart of Music City Nashville TN. Founded in 2003 with a penchant for British Gear, British Audio has grown to service, repair and restore over 70 brands. We are proud to say our 6 Master Technicians bring a combined 75 years of experience.
I've had an Ampeg SVT-7Pro for a few years and one of the ICE2A165 chips overheated. Apparently this is a common problem with earlier models of the amp. I took the amp to my repair man and he mentioned that the chip replacement itself is very challenging/expensive, but replacing the board may be an option. I found a replacement board with an upgraded chip ("revision H" of the amp) for a few hundred bucks which should be pretty easy to self install.
However, my tech mentioned that many of today's Class D amps are notoriously fragile and once broken, they are often more expensive to repair than to replace. He said that if the amp is light, small, and powerful, it usually falls into this category.
I love the SVT sound and controls, so I'm wondering if I'm better off getting one of the big heavy SVT-3 or 4 Pros. They only have a two year warranty when I look at most online stores, but would they be easier/cheaper to repair in the event of a fault? I want an amp that lasts a long time.
UPDATE 1:Here are pictures of the chip explosion. It took other parts with it. I'm curious what those other are and how easy it would be to replace them all (I'm sure they're cheap.) I can solder, I just don't have all the fancy diagnostic tools. Spending $20 and some spare time seems worthwhile, so I don't have to buy a new amp .
The U2 ICE2A165 chip should be replaced by an ICE2A265 (just as cheap). It's a standard 8-pin IC; if I was working on that board, I'd pull the broken chip, insert an 8-pin IC socket and then use the upgraded chip (it has better thermal properties). Talk to another repair man - this doesn't seem like a challenging or expensive fix.
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This amp is a sort of "rescue." The owner brought it in with a variety of intermittent problems -- microphonics, hum, buzz, crackles, cutting out, burning smell. It had recently had a "cap job" to replace the electrolytics in the power supply. Turned out it wasn't worth it to repair -- the new supply caps were axial instead of radial (with uninsulated leads flopping around), cracked solder joints all over the inside, toasted resistors, microphonic power tubes, torn ribbon cable with a bad patch job, heat damage, arc'ed contacts, and many marginal and noisy components. Normally a "do not resuscitate," given what these amps go for on the used market.
To make matters worse, the design itself has a number of problems, mostly to do with PCB routing. The grounding scheme causes the amp to hum excessively, even when operating properly. There's a rat's nest of cables around the power supply, making it incredibly difficult to remove the mainboard. Rumors are that certain PCB traces are too thin for the current they carry, causing heat damage and sometimes fires in the amps. Many resistors are underrated in power capacity. The board soldering is incredibly poor.
There are service bulletins out for this amp, but they are only made available to authorized Ampeg service centers, so I couldn't get them. They apparently recommend rerouting PCB traces and adding jumper wires. I had to come up with my own solutions. It's also frustrating that the PCB does not have any printing on it, so you have to figure out which components are which by tracing the circuit.
All that said, the circuit is fascinating, and has some interesting non-traditional elements. It's not a Marshall/Fender clone, and it's a worthwhile design, despite its lacking implementation and build. I was originally going to scrap it and recycle the parts, but couldn't bring myself to in the end. Every time I fixed something, the amp got a little better, making me want to keep working on it.
Yamaha Music Australia sells AMPEG products through a network of Authorised Dealers and is pleased to offer the following warranty, which applies to products purchased from Authorised AMPEG Dealerships throughout Australia. YAMAHA suggests that you read the warranty terms and conditions thoroughly, and invite you to contact your place of purchase or Yamaha Music Australia Service Division if you have any questions regarding this warranty.
The warranty covers all defects in materials or workmanship for the duration of the product warranty and is in addition to the protection conferred by law. Yamaha Music Australia Pty Ltd agree to repair, or at their option, to exchange free of charge any defective part in the AMPEG amplifier, speaker cabinet or accessory supplied herein or rectify faults which, in their opinion, are due to defective workmanship or materials, within one year from the date of purchase, provided the following conditions have been met:
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
AMPEG products requiring warranty service should be returned to the place of purchase or taken to an Authorised AMPEG Service Centre or technician. Please provide your original purchase receipt, along with your, name, address and daytime contact details when returning goods under this warranty. Information on how to find your nearest Authorised AMPEG Service Centre is available on our website.
Please retain your original receipt or proof of purchase in a safe place as it may be required when making a claim under this warranty. We recommend you keep all the original packaging, as it provides the best protection in the event you have to transport the instrument in the future.
Over the years, Montebello Speaker Repair Center Inc has professionally re-coned thousands of Ampeg speakers, including most of the major brands you know, Whether it be speaker re-coning, voice coil replacement, a misaligned magnet repair, spider repair or replacement, re-foaming, etc., Montebello Speaker Repair Center Inc possesses the knowledge, experience, tools and equipment necessary to make your speakers sound like new, (or better) again.
Ampeg Speakers with a foam edge, typically found in home and hi-fi systems, deteriorate over time. Re-Edging (or Re-Foaming) replaces just the deteriorated foam from your Ampeg speaker. These costs less much less than buying a new speaker and can make your Ampeg speaker sound like new!
We carry Ampeg Accessories and many other brands. Come to us and be sure to find what you are looking for. Get that Ampeg Accessory you are looking for or just give us a call and we will let you know if we have it in stock.
If your flushometer is running and flushing it out will not stop it this usually means the flushometer diaphragm in your Ampeg is bad. Other indicators are small leaks from the outside cover, deteriorating black rubber when touched or on leather diaphragms, rips, tears and shrinkage. Replace the diaphragm with a new flushometer diaphragm and get your flushometers running like new.
Hey guy, I don't know if this is normal.
The bass player in my band has a Ampeg SVT 410HLF Cab with a Markbass Little Mark II.
Now, when he plays loud the speakers inside the cab light up. Depending on how hard/loud he plays, the speakers become brighter. I think higher tones make it happen more.
Could someone PLEASE explain this to me? Tell me if it's bad, if it doesn't matter, if it needs repair/maintenance.
It lights up and it's not meant to? I could see a gimmick or somnat where people put LED's in there amps but if it's not meant to then something is electrically arcing. Not cool, you're asking for fire.
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