Amplifier output got shorted on right channel, Left channel is now louder than right

[Steve Conner]

That's fine, the resistance is only 0.47 of an ohm, too small for most meters to read accurately. (try touching the prods together and see what the "200" range reads, then subtract that from the 0.7 reading)

If the resistor were burnt out, it would read overrange, for which most meters display "1. "

[S1L03T]

It reads 00.2 so i assume that 00.5 which is what it equals is very close to 0.47k?

[Steve Conner]

Yes, except the "k" in this case is a tolerance code, not part of the resistance value. A 0.47k ohm resistor would be 470 ohms. Something to bear in mind when ordering!

[Jazz P Bass]

Some meters can not read hundredths of an ohm accurately.
The fact that the resistor reads below one ohm is enough proof that it is not open.
Which is all that matters at this point.
It is NOT open.

[S1L03T]

The electronics store managed to get me the new transistors (exactly the same) and the ceramic resistors. I just need to identify the 220 ohm resistors cause they couldn't figure out what they were. I'll just give them the schematic?

[Jazz P Bass]

The electronics store managed to get me the new transistors (exactly the same) and the ceramic resistors. I just need to identify the 220 ohm resistors cause they couldn't figure out what they were. I'll just give them the schematic?

They are 220 ohm 1/2 watt resistors.
Nothing special.
Farnell Australia:Your Search Results | element14 Australia | Results

[S1L03T]

Okay so managed to get the parts, put it all back together, now it buzzes real bad and just burns one of the fail safe 220ohm resistors.. just smokes it.. I dunno what to do, everything else looks fine, while this happened one of the ceramic resistors gets really hot, burns your finger touching it. Any ideas? Should i just scrap this.. Quite disappointing to be honest

[Steve Conner]

Standard solid-state troubleshooting scenario. There's probably some other blown part that you forgot to replace, probably one of the small transistors.

Having said that, if you undid the output transistors from the heatsink at any point, did you put the insulating washers back afterwards?

[Jazz P Bass]

Might add that you do not want to connect a load to the output until you get the output section stabilized.
If that sense resistor is burning, you missed something.
Search ' lamp limiter' on the forum.
Build one. It will avoid the burning parts issue and allow you to properly troubleshhoot the amp.

[S1L03T]

Hmm, well doesn't matter now anyway, i ended up scrapping it and getting a home theater system.. which sounds no where near as good, but.. it can go louder.. Any way thanks for all the advice, will definitely keep it in mind for next time. Cheers guys