Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: grigori.kartashyan on August 02, 2012, 04:21:17 PM
I've recently bought a FAME G20D2-A practice amp off ebay. it was fine for a few hours use but now all it does is buzz. It's doesn't stop buzzing/humming when the strings on the guitar oare touched/earthed either.
Disconnect the cables at the speaker terminals, and measure its ends with the multimeter in the 200VDC scale, you will probably find around 20VDC there. It's a Bad TDA2050 and or 1 or more filter caps. I was replace TDA2050 and all bigin working))
(https://lh5.googleusercontent.com/mVJv0F730N6dmSTBKDHmB5envANCxLWA9z5zXbRGVVOMJik0lmv3NI-O_c_uvZc3AdIFfc8ECbc)
(https://lh5.googleusercontent.com/QJH0CeED6BVMjG6SxbW_WMy7LHDYm6YaG65wz1g9Zcj_SluHJLdE_kFydTM520yhzs6J-1Q3aBw)
Congratulations.
Thanks for sharing.