fender stage 100 head loud input hum

[sidman]

I'm really unclear about the DSP. This is an older stage 100 head. It doesn't say anything about a DSP.

[sidman]

I couldn't find a model number. All it says is model stage 100. There's no DSP listed.

[52 Bill]

I couldn't find a model number. All it says is model stage 100. There's no DSP listed.

Sorry, I should have known that your amp didn't have the DSP because of your question about the reverb tank.

There is no plus 5 volt power supply in your amp. So nevermind.

If you have checked all of the ICs for voltage on the input/outputs, then check the filter caps for the 16 volts power supplies. These are C65, C66, C67 and C68.

[sidman]

Sorry, I should have known that your amp didn't have the DSP because of your question about the reverb tank.

There is no plus 5 volt power supply in your amp. So nevermind.

If you have checked all of the ICs for voltage on the input/outputs, then check the filter caps for the 16 volts power supplies. These are C65, C66, C67 and C68.

ok I check c65,c66,c67 and c68 they all have voltage ranging 16-24 volts,