Pioneer GM-X702 amp resistor identification

[Yannixx]

Hey there,

I have a Pioneer GM-X702 amp that I use with a 12 inch pioneer sub.
Had some troubles with my rca cables (tip snapped) and replaced those.
The amp powers on and stays on, however nothing comes out of it.

Disassembled it and saw that there was 1 burned spot, at a resistor.
Looked up the service manual and found out what the part number was.
Searched through the internet but really can't find what the specs are of that one resistor.

So I guess you see what I'm going to, could anybody help me find the resistor value?

Here's the link to the service manual:
https://www.dropbox.com/s/vmau6v40f5...gm-x702_sm.pdf


The resistor I am talking about is the following, on page 4 you see the part number.

r947

Part number: RS1/4PS101JL


The Schematic Circuit Diagram on page 7 reveals the number 100 below it.

Could somebody help me out?

Thank you very much!

[soundguruman]

Hey there,

I have a Pioneer GM-X702 amp that I use with a 12 inch pioneer sub.
Had some troubles with my rca cables (tip snapped) and replaced those.
The amp powers on and stays on, however nothing comes out of it.

Disassembled it and saw that there was 1 burned spot, at a resistor.
Looked up the service manual and found out what the part number was.
Searched through the internet but really can't find what the specs are of that one resistor.

So I guess you see what I'm going to, could anybody help me find the resistor value?

Here's the link to the service manual:
https://www.dropbox.com/s/vmau6v40f5...gm-x702_sm.pdf


The resistor I am talking about is the following, on page 4 you see the part number.

r947

Part number: RS1/4PS101JL


The Schematic Circuit Diagram on page 7 reveals the number 100 below it.

Could somebody help me out?

Thank you very much!

It's 100 ohm, 1/4 watt.
However if it burned, your 15 volt DC supply probably has a short in it.
See D 909, zener diode...and other related parts.
Just because you see a burned resistor, and replace it, does not mean the unit will work again.
WHAT caused the resistor to burn?
You are looking at the symptom, not the cause.
Quite frequently, it's cheaper to just buy a new one, than to try and repair an old one.

[Yannixx]

It's 100 ohm, 1/4 watt.
However if it burned, your 15 volt DC supply probably has a short in it.
See D 909, zener diode...and other related parts.
Just because you see a burned resistor, and replace it, does not mean the unit will work again.
WHAT caused the resistor to burn?
You are looking at the symptom, not the cause.
Quite frequently, it's cheaper to just buy a new one, than to try and repair an old one.

Thank you for your quick response.

You are right, I should examine what caused it but before this resistor burned it had been working fine for years.
Just until the rca cable snapped and the cables were all messed up it burned, so I am assuming that that is the cause.

But if the resistor doesn't fix the problem I'll take your advice and buy a newer one.

Thank you.

[soundguruman]

Yeah well, I don't think the RCA plug would cause the 15 volt to short...or the resistor to burn...
but you may get lucky. It's hard to tell w/o testing it...