more progress with my broken amp...

[marrstians]

ok... when i wasn't getting 445v on pin 4 of my tube sockets i started checking some of the resistors... i check the big 470ohm/5watt resistors on the tubes and they all read fine, but where they all joined up to attatch to another 470ohm/5 watt resistor there was no reading on that resistor... i'm thinking that this resistor has blown but the question is why? should i replace that resistor or is there a lot more touble shooting to try and find out why it went out? what could make it blow? could it be a bad circuit that i plugged my amp into? my tubes themselves?

[ErikMiller]

I recently repaired a tube amp that just had one of the power resistors go open.

Sometimes components just fail.

Power the circuit down, unsolder one side of the resistor, and measure its resistance.

[marrstians]

yeah... i did that... i took it out of the circuit and got a big fat nothing on my dmm... i guess it's gone... could it have been some kindof power surge?

[Adam Shame]

It happens sometimes. People just explode. Natural causes.

[freeradical24]

resistors are cheap.i would replace it and see what happens..