I don't understand the logic of paying $315 for a repair that is going to be under warranty for at least another 2 years?..
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Another Ampeg SVT7 pro
- Thread starter c4muzik
- Start date
From what I recall in a previous thread the board he is replacing was for a Rev A00 7PRO that he purchased used on Craigslist.
It is possible that the "rev D" board was an artwork change and no design difference to the C00.
There would have to be a reason to just move parts around... crosstalk, interference, etc, causing a problem... Otherwise there would be a circuit parts change.
Hopefully, they have put a real fix in place, and are now trying to discover if there are any units or usages for which the "fix" isn't effective... Customers can think of a lot more different ways to break an amp than the engineers can..... customers do not know that "you can't do that"..... so they "do that"....
What I am "not getting" is that comment about no visible difference from an A00 to a D00 board........ my spies tell me that there was a change from an opto-resistor limiter to a different type, back around rev B or so, and that should be pretty obvious if a person can spot different shaped parts, etc..... my informants may be mis-informed, but I doubt it..... there was a significant circuit change, apparently.
What rev has what changes?....It's an interesting question, and one we probably will not get any real answer to unless someone violates their confidentiality agreements bigtime..... or unless some very bored person reverse-engineers the different boards..... I'm not that curious, and I don't clearly remember what rev I saw the schematic for briefly..... probably C00.
That's exactly correct. I bought mine used, accepting the risk that it came without warranty. At the end of the day I have a rev D that cost me the same as a new unit...big deal.
I buy used gear constantly, and for every situation like this...I have at least 50 success stories. That's why I'm not terribly bent out of shape over it...it's no different than playing the stock market.
As far as different layout between Rev A/D...I did not do a thorough examination, only a 30 second spot check of the two boards. It's entirely possible that nothing at all has changed other than "artwork". This would be shady at best and highly unlikely. It's likely that whatever changes have been made are not apparently obvious to the naked eye. It could be as simple as a different IC somewhere that controls tolerances within other circuits, etc. Without seeing schematics and such...it's difficult to say with any accuracy from form factor alone.
That said - I WAS told by Ampeg that they were switching distributors, which was part of the reason for the extended backorder. Perhaps at least part of the issue was QC at the prior distributor/manufacturer?
I just got a message from my repair shop that Ampeg has authorized a total amp replacement. The shop has been VERY vague about what all was damaged, so it may have been worse than just my board. Or- they replaced my board and it still didn't work, which would explain why its taking so damn long. Anyway, just waiting on the new amp to be shipped. A little history on the amp usage - About 20 hrs a week average between practice and gigs, for just over a year. So about 1000 hrs + or -. So I might be a little harder on it than the avg. but I expect a pro level amp to take the abuse. I feel good about the support I'm getting, in a perfect world it would happen faster but of course it aint too perfect!
Purchased a new SVT7 head in November 2014. After the third warranty return to address the cutting out problem, the store agreed to take it back and give me a store credit. Obviously Ampeg have not addressed the reliability issues since the previous posts. That was my first and last experience with owning Ampeg gear. Now own a Mark Bass TTE 500 which purrs along nicely.
Jerrold,
Do you think Ampeg knows exactly what the problem(s) are for Rev C00?
If so, is this information known?
Why would any manufacturer not have piles of boards in stock for a known problem; it's a cash cow as the majority of board replacement may be out of warranty units?
I have a Rev C00 that I bought used; it works great and I like it.
With no warranty, Ampeg is the last place I would ship it as my local authorized Ampeg repair shop will tell me when they can look at it without it sitting in a unannounced long queue. They also are diligent about checking often about back ordered parts.
If the D really does work, the serious player would either sell their 7 Pro and buy the Rev D, or, just install a Rev D board.
I would go down this road if only I knew the truth.
Do you think Ampeg knows exactly what the problem(s) are for Rev C00?
If so, is this information known?
Why would any manufacturer not have piles of boards in stock for a known problem; it's a cash cow as the majority of board replacement may be out of warranty units?
I have a Rev C00 that I bought used; it works great and I like it.
With no warranty, Ampeg is the last place I would ship it as my local authorized Ampeg repair shop will tell me when they can look at it without it sitting in a unannounced long queue. They also are diligent about checking often about back ordered parts.
If the D really does work, the serious player would either sell their 7 Pro and buy the Rev D, or, just install a Rev D board.
I would go down this road if only I knew the truth.
There is no Rev D00 that I know of, Jim. I got mine in November and it was marked Rev C00. I didn't look at the boards to get their rev numbers, though. And now that it's in this big humongous rack, I won't be 
