Problem with my Fender Hot Rod Deluxe

[guitkrazy]

If the filter cap is shorted or leaky for that matter, the low voltage supply will be pulled down as you noted. Check C40 and C41: 1000mF at 35v.

Next would be to check ic chips U1, U2 and U3.

I'll ask this one, what are the voltages on each side of the two large ceramic resistors R78 and R79 as read to ground?

what is the best way to check the ic chips?

[52 Bill]

what is the best way to check the ic chips?

Well one way would be to check for heat. Are any of them hot to the touch?

Also check each of the pins for voltage. There should only be dc voltage on pins 4 and 8 of the reverb and loop chips. There will be voltages on other pins for the footswitching chip.

But if your power supply isn't working correctly you may have a problem with this method.

[rudutch]

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