here is the issue, my visonic 4000xd amp one day came on with the protect light, took it to the local audio shop, thay sent it out for repair, got it back a few days later, hooked it up and in a split second the amp was hot enough to burn your skin to the touch, took it back, sent away again, after a few days thay said there is 8 mosfits bad. and deamed unfixable ??? - So after 3 months I finally got it back, opened the amp up and notice that thay cut out 7 mosfits, and 3 are burnt and still in the amp ?? -Yes my amp was butchered, Not to say that in the long run cost me $210 bucks, My money I paid to have it fixed was to be refunded to me as thay cant fix it, then a store credit, then FA.

I have the #s off the missing damaged mosfits, should i try fixing, anyone know a place that can look at it reasonable, thats honest ??

The missing ones have the # - 1RF9640
and the burnt ones have the # - 1RFP064N

Open for suggestions?

there is a good chance that every single fet on the board will need to be replaced... total cost could be over $300-$400

at any rate it sounds like your local shop screwed you... you should have taken it to a repair shop on your own.... I would go in and demand your $$$ or take them to court....

unless the board has burned traces it can be fixed....

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SIC Audio

Thanks for the input Haunz

If you are in Toronto take it to S&S Electronics they fixed my 4000xd with out a problem and it works great

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98 Neon
1 12"
1 amp (or 2 depends on my mood)
some 1/0 wire

Team

Got Flex?

Thanks djcake

Mosfets are cheap... its the labour. Did they say why they did not fix it?
On the other hand those IRFP064N fets handle 110 amps.. they are in the switching supply.. that is a huge amount of current and maybe there was something else wrong...To be honest it takes some abuse to blow a 110amp transistor.. If I would open an amp and see that kind of dammage I would hesitate to fix it..

and how many amps do you service?
not many from the looks of it
transistors can be chap or very exspensive
had a sony amp in price on the transistors was over $ 50 each
and there were 8 per half channel
do the math there mr transistors are cheap
p.s. sony uses obsolite parts so they buy up old stock for a deal
then when you need to get it serviced the only source for parts is from them
unless you willing to pay for a production run from the manufacturer

sorry for the long reply... been there done that

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TEAM NOT LOUD
TEAM ELECTRO-PRO
TEAM MAXIMUM THRESHOLD

2005 - 161.2 dB CERTIFIED - 2-RE MT12's on 4 American Bass 200.1

2007 - STREET C - 15" RE MT in a 1995 NEON!
154.2dB 4 AmericanBass 500.1's with way too much voltage drop

2008 - Street C - 15" FI BTL in a 1999 VW Jetta TRUNK!
149.0 on 1 - Powerbass XA3000d
not a bad start for a raw box

Been there too!
Let her die.

Sorry to hear that, i hope it works out for you.

This yet another good reason why I stick to old school amps that are 10 , 15+ years old. If they have lasted that long with no repairs they will last at least another 10 to 15 years.
old school guy.

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Old school guy.
Kicking it with:
stock door and dash speakers (don't laugh)
Kenwood KDC-7009 phantom face
1 12'' JBL P1220II sub
ESX 475.1 amp
Earthquake P2030


Less is more people.
It's easy to add a ton of equipment yet it's most difficult to make a great sounding system with less.