Need Help With PCB Board For Amplifier

[firebirdjimbo]

my problem is a blow amplifier for subwoofers, i need help finding a cross reference model of a certain mosfet because i can't seem to find any online. here are some pics i took of the damage. i'll have more questions above each pic, thanks. please click, and zoom in on each picture(CTRL+scroll)

ok, in this first picture i have the back of the pcb, it looks like 2 traces on the board were literally blown out, i resoldered thin wire to replace each trace and seems fine for now.
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in this second pic there's what seem to be 2 black resistors one completely exploded off of the board (so i put a little solder where it was) and the others melted and done for. does anyone know what size/type they are so i can replace them? i can't find markings anywhere on them because they're toast.
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in this picture, theres a blown mosfet(?) and its right next to the other one, so im just going to replace it with the same type but i dont know what it is exactly and the specs for it, it just says 4.3 on it.
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in this picture are the leads to a mosfet that was blown, there were burns around the solder joints and on the top side of the pcb their are burns on the heatsink, in the end i tested all of the mosfets and out of 14 mosfets in total on this board 6 need replacing because they were cracked/blown or not reading correct ohms. i seemed to find all of the new mosfets i need from this website (taydaelectronics) and those mosfets are as follows IRF 9540(x2), IRF510A(x1) FKV550 which i couldnt find so im using (IRFZ44N(x1). but the one i couldn't find and need help with is; FRH10A15 i need 2 of them but cant find anywhere on the web to buy them, and was wondering if anyone knew the cross reference models i could use to replace this one or any mosfets that were close to the specs of this one i could use.
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[4pyros]

Did you try and google "FRH10A15"?
If you did you would find its not a mosfet but a dual diode.

 

[firebirdjimbo]

sorry, im new to all the small components

 

[firebirdjimbo]

well, heres the amp model and serial. SONY xplode(no suprise) XM-1252GTR SN:1504815 bought the amp, and it came like this.

 

[firebirdjimbo]

ok, i downloaded the board layout (which i should have done in the first place) and got everything i need from there as far as parts list goes. and it turns out that the mosfet that blew before was not original and in fact was a IRF510A when it should have been a EKV550 like the rest of them. so i'll give sony my parts list and go from there, i dont have soldering/de-soldering tweezers for the small diodes so that will be an adventure. i hope sony has all these parts (i have all the part and model #'s) but i have a feeling they might not have the FCH10A15 and FRH10A15 Diodes i need. wish me luck

 

[4pyros]

You should have crossed the parts to 3rd party venders. Alot cheeper.

 

[KeepItSimpleStupid]

Ouch. www.partstore.com has them. www.encompassparts.com has them coming.

 

[firebirdjimbo]

ouch, $30 for just those 2 diodes. damn. i could buy 20 of the other kinds i need for like $8. thanks for the find KeepItSimple

 

[unclejed613]

these diodes need to be the correct part number, don't make any substitutions. just because you can get a "diode" cheaper doesn't mean it will work. are these schottky diodes or standard silicon diodes? what's the reverse recovery time of the original (extremely important, especially in a class D amp), what's the junction capacitance?

i see plenty of these "Xplode" amps where i work, and they're usually "DX'ed" (scrapped and exchanged) rather than repaired because once they fail, they;re really squirrely afterwards if they do get repaired.

 

[firebirdjimbo]

think i'll call it quits. not even sony has some of the parts i need apparently.