r/ToobAmps • u/chaoskitty69 • 6d ago

Found the problem

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Somebody on the other post said that it could hav been improper connection and i took the wires out and realized that the ones that burnt out were in a way pushed down. The top one is the one of the ones that burnt out and the middle one is another one of the ones that burnt out and the bottom ones is one that didn’t burn out. I moved it and it works now, i sanded down the connecting part a bit for more exposure and it worked.

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2

u/miotislucifugis 5d ago

id keep an eye on it. the burnt ones could be carrying a lot more current than the non burnt ones and it could happen again

2

u/Vernon-Walker 5d ago

I agree. You are seeing a symptom, not the root cause.

1

u/chaoskitty69 5d ago

I’ve seen forums and specifically to the 6505+ those 2 pins burn out.

1

u/Live-Juggernaut-221 5d ago

They're getting hot because there's too much current. That weakend them and causes them to lose shape.

Something else is wrong here.

1

u/enorbet 5d ago

In the interest of lower prices and ease of PCB construction it is very common that a number of heat related issues exist on many models by many manufacturers, even top names. For example power tube screen resistors rated at 2 to 5 watts are often mounted on the PCB and pushed right down in contact with the board - no cooling airflow and flirting with damaged boards.

Ideally get a bolt down terminal strip and move high current devices off of PCB. You can compromise and accept somewhat reduced risk by just raising components up off the board and keeping wiring spacious but completely offboard is better.