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oldguyoklahoma 23rd September 2012 11:50 PM

Diablo Audio
 
Has anyone worked on a diablo 2500.1 replaced all power supply fets. relayes power but power supply wont power up. no rail voltage. any ideas.

Was a nasty melt down. trying to fix for a fiend.

brandes.cm 24th September 2012 01:42 PM

Production model or proto, if it has the heatsink milled with diablo audio... its production and you might just as well trash it.
They are a bad design and will never be stable below 2 ohms.

Ebbcotech is the only person with knowledge of it and you will get a response here and there but never a full answer.

Perry Babin 24th September 2012 02:05 PM

Post a photo of the circuit board.

oldguyoklahoma 24th September 2012 03:49 PM

It's a proto. It took a hard frying. Killed all the power supply fets. Had several burnt traces and lots of burnt resistors. R&R'd the burnt parts now only the relays come on when powered. No rail voltage. Will post a pic when get back home.

brandes.cm 24th September 2012 04:55 PM

I have a proto version on my shelf right now, I can get some values if you need them.

If you could possibly give me the output fet locations. I need to know where the n-channel parts go and the p-channel. Don't ask why. :)

oldguyoklahoma 1st October 2012 12:33 PM

3 Attachment(s)
Here are some pics of that amp.

brandes.cm 4th October 2012 05:59 PM

1 Attachment(s)
What are the parts in the yellow boxes, IRF240 and IRF9240? Which ones belong in each location?

oldguyoklahoma 7th October 2012 02:28 AM

1 Attachment(s)
going from the inputs toward the power supply. 4-irfp240 and 4-irfp9240.

Starting to feel like i cant fix anything. this one and three others are kickin my butt.

blazer40 7th October 2012 02:59 AM

Start with the basics.. Is there power on the power supply IC? Can you list the voltages of each pin for us? (I know, this is a Perry question normally.....) Do you have a scope?

-Blazer40

Quote:

Originally Posted by oldguyoklahoma (Post 3192366)
going from the inputs toward the power supply. 4-irfp240 and 4-irfp9240.

Starting to feel like i cant fix anything. this one and three others are kickin my butt.


oldguyoklahoma 7th October 2012 03:37 AM

yes. its a old one but works.


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