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Peavey CS4080HZ Blown

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Pinyorouk View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pinyorouk Quote  Post ReplyReply Direct Link To This Post Topic: Peavey CS4080HZ Blown
    Posted: 21 December 2021 at 4:12pm
I managed to repair the amp. Sourced original IGBT's etc. 
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Pinyorouk View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pinyorouk Quote  Post ReplyReply Direct Link To This Post Posted: 03 December 2021 at 11:50pm
After some reading the type of IGBT's used are nothing special. What was throwing me off was the symbol. Will look at alternatives. 

Edited by Pinyorouk - 03 December 2021 at 11:59pm
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pinyorouk Quote  Post ReplyReply Direct Link To This Post Posted: 03 December 2021 at 4:14pm
Originally posted by kedwardsleisure kedwardsleisure wrote:

I can't even remember doing the last one, but if it's a toss up between a possible fake or reject ebay transistor and cross referencing to a genuine 'equivalent' I would choose the latter each time.
The problem with dodgy rail switching devices is that they might fail mid-gig and you wouldn't know until the output section has cooked itself to death.

Thanks for your reply. 


Edited by Pinyorouk - 03 December 2021 at 11:58pm
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kedwardsleisure View Drop Down
Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 02 December 2021 at 11:13pm
I can't even remember doing the last one, but if it's a toss up between a possible fake or reject ebay transistor and cross referencing to a genuine 'equivalent' I would choose the latter each time.
The problem with dodgy rail switching devices is that they might fail mid-gig and you wouldn't know until the output section has cooked itself to death.
Kevin

North Staffordshire

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Pinyorouk View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pinyorouk Quote  Post ReplyReply Direct Link To This Post Posted: 02 December 2021 at 10:51pm
I have since found them on Ebay. Just need to try and see if they are genuine. 
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pinyorouk Quote  Post ReplyReply Direct Link To This Post Posted: 02 December 2021 at 8:47pm
Hello Kedwardsleisure and  SimonP. I have the unfortunate task of repairing one of these amps. Did any of you have to replace the now obsolete rail switching IGBT by any chance? I have 1 short circuit and looking for an equivalent. Will replace as a pair amongst other parts. 

Thanks,

Mike


Edited by Pinyorouk - 02 December 2021 at 8:48pm
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kedwardsleisure View Drop Down
Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 9:11pm
I've just done the crest version with a blowup, that quad transistor had blown too.
More worringly for me are those emitter resistors that sit under the heatsinks and nothing but the proper ones would fit I'm sure

Quote NEVER AGAIN


funnily enough I said that about the last one, and the one before. This time I mean it!!


Edited by kedwardsleisure - 17 May 2016 at 9:12pm
Kevin

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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote simonp1100 Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 8:53pm
Repaired one of these and a pigs ear to do, loads of surface mounts and the 4 transistor driver chip was a bugger. NEVER AGAIN
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kedwardsleisure View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 7:26pm
There are fake 4080's around. Inside is the usual crest/qsc copy. They might actually be better, not for me to say

Edited by kedwardsleisure - 17 May 2016 at 7:27pm
Kevin

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Panda Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 6:41pm
Gentlemen, thanks for your your advice. I think I'll pass on this one. I would rather wait a little longer for a Matrix or SAE PCM.
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kedwardsleisure View Drop Down
Old Croc
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Post Options Post Options   Thanks (1) Thanks(1)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 5:41pm
If the amp is cheaper than the scrap weight plus your fuel to the scrap yard then you can't lose. Otherwise avoid unless you have a fetish for surface mount
Kevin

North Staffordshire

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DjLeco View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote DjLeco Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2016 at 4:05pm
If this could help:
 
 


Edited by DjLeco - 17 May 2016 at 4:06pm
I'm A Stupid SMART Romanian...
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