Amp Fixin' Advice JBL

[TMali 10+ year member]

Bought a JBL GTQ at a swapmeet about 6 months ago now, guy said it worked, looks brand new ( stickers are still on it) So i bought it. What could i lose for 3 bucks really anyway??? Well got her home and tested it, light comes on no sound. Put it away till now and decided id investigate into it. Yep, blow mosfet. Looks like only one got crispy. I want to try to fix it and get the right part/parts to fix it but i dont know where to start??? tried looking up the number on the good ones next to it but cant find it exactly.

On it, it says

ST W714

MOROCCO

P50N06

Does anyone know how i can find this part or Find out what mosfet i need?

Thanks Guys

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[dbeez 5,000+ posts]

Search results for "P50N06" - Allied Electronics

maybe

 

[TMali 10+ year member]

Search results for "P50N06" - Allied Electronics
maybe

hmmmm idk... but i dont think that is it

 

[pro-rabbit 5,000+ posts]

send it to someone who can repair it, or sell it as broken.

 

[TMali 10+ year member]

send it to someone who can repair it, or sell it as broken.

Fully working its worth maybe 50 buck

Id rather through it at kids playing in the street then send it to someone

 

[pro-rabbit 5,000+ posts]

Fully working its worth maybe 50 buck
Id rather through it at kids playing in the street then send it to someone

This with video? Also video of you being arrested for proof it was done.

Get a hold of the some of the amp repair guys on here and have them help you with parts.

 

[pro-rabbit 5,000+ posts]

Fully working its worth maybe 50 buck
Id rather through it at kids playing in the street then send it to someone

This with video? Also video of you being arrested for proof it was done.

Get a hold of the some of the amp repair guys on here and have them help you with parts.

 

[TMali 10+ year member]

This with video? Also video of you being arrested for proof it was done.

Get a hold of the some of the amp repair guys on here and have them help you with parts.

Thats what im trying to do here, get someone who can tell me how to match up the mosfet or happens to know how to make that part number make sence

 

[akheathen Premium Member]

what model is it? got a pic of the amp, and fried fet? also, you are going to want to replace the whole bank, and resistors that feed them, not just the one fried transistor........ i might actually be interested in the da^^n thing.....

oh, and i think this is the one, btw..

2N3714 STMicroelectronics Bipolar Power

 

[TMali 10+ year member]

what model is it? got a pic of the amp, and fried fet? also, you are going to want to replace the whole bank, and resistors that feed them, not just the one fried transistor........ i might actually be interested in the da^^n thing.....


oh, and i think this is the one, btw..

2N3714 STMicroelectronics Bipolar Power

I knew about replacing the bank, but not the resistors.

And i thought i posted the whole modle.... but i guess not. It's a JBL GTQ 240

 

[SmartAsss 10+ year member]

FQP50N06 Fairchild Semiconductor MOSFET Poweranother option here.. don't read too much into the part number they are similar basically the same part just slightly different indicators, all will work.. resistors are cheap too. read the color codes and get some new ones if they are fried.

 

[akheathen Premium Member]

yah, most of the time, when you can find all the specs on it, there is several different ones that will work as good, or better. when it comes to the risistors, i replace them without question. they are dirt cheap, and at least one, or more has been over-loaded, and you can't tell most of the time.

 

[Spooney 10+ year member]

FQP50N06 or STP50N06 would work just fine as replacements. FQP50N06 will be easier to come by. I would look at Electronic Components from the Best - Future Electronics , Mouser Electronics - Electronic Component Distributor , or Electronic Components Distributor | DigiKey Corp. | US Home Page . All very reliable parts suppliers. As was mentioned you will want to change all of the FQP50N06's and their gate resistors plus you should also verify that the power supply driver transistors have not went south on you as well. You probably won't wanna hear this but more often than not blown power supply fets are caused by shorted fets/transistors in the output section of the amp. If you have a meter I would start checking between the legs of all the output fets/transistors to see if you read any shorts before you order any parts. You may have a channel or two that needs new outputs as well. Also when you buy fets try to buy at least 10 of what you need even if you don't need that many. Ordering ten plus will help make sure you get matched date coded parts. Parts with matching date codes will increase the reliablity of the amp. You never want mismatched date codes for any parts that are in parallel.

 

[Spooney 10+ year member]

what model is it? got a pic of the amp, and fried fet? also, you are going to want to replace the whole bank, and resistors that feed them, not just the one fried transistor........ i might actually be interested in the da^^n thing.....


oh, and i think this is the one, btw..

2N3714 STMicroelectronics Bipolar Power

That is not the part he is looking for.

 

[dragonrage 10+ year member]

511-STP50N06

STP50N06

Obsolete

STMicroelectronics MOSFET Power REORD 511-STP55NE06 TO-220 N-CH 50A 60V Product Info. Not Available

Replace them all.