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Author Topic: Fender Frontman 212R with distorted sound  (Read 36 times)


  • Chipper
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Fender Frontman 212R with distorted sound
« on: March 01, 2021, 10:39:48 AM »
Hi forum,

I have a Fender Frontman 212R (not FM212R) with an issue of distrorted/crackling sound when the guitar is played. The distortion/crackling happens only when the guitar is played, when the source is muted there is no sound on the speakers. Both speakers are new and working correctly.
The issue persists connecting the guitar on the Power Amp also, so there's something wrong in the power amplifier section (lower right section in this schematic). https://idoc.pub/documents/fender-frontman-212r-schematic-ylyxvo69mznm

I tested all the capacitors on board and they seem to be ok. Solderings seem to be ok as well.

Did this happen to any of you? What tests should I do to find out the issue?