DESCRIPTION:
This is a later 1978 ultra-linear (UL) 135W Silverface Fender Twin Reverb that has extensive servicing and mods done before me, but customer complaining of noise and "glassiness" in the tone. We'll open it up and look at the mods done, and we'll eventually diagnose the problem down to bad output tubes, listen to one of them squeal like a tortured primate on command, then change tubes and rebias.
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♠STUFF I USE
-5A Variac: http://amzn.to/2FNWthU
-Jameco Isolation Transformer: https://amzn.to/2PRv1Fa
-Fluke 87: http://amzn.to/2DwHjvr
-Yotec 936 Soldering Station: http://bit.ly/2JqB1Vw
-Sealody SSA51 soldering station: http://amzn.to/2DJTS7P
-Black and Decker Heat Gun: http://amzn.to/2DWpDhr
-Geekcreit® LCR-T4 Mega328 Transistor Tester http://bit.ly/2J9uLSA
-HT02 Handheld Infrared Thermal Camera http://bit.ly/2LXfLoD
-Solderless Breadboard: http://bit.ly/2stkVAq
-Breadboard Jumper Wires: http://bit.ly/2JowaEh
-Geekcreit® XR2206 Function Signal Generator DIY Kit http://bit.ly/2LYBvkb
-Contact Cleaner: http://amzn.to/2FVitro
-Deoxit Fader Cleaner: https://amzn.to/2LPwtsE
♠RECORDING
-JVC Everio Camcorder https://amzn.to/2RLIleU
-Andonstar USB Microscope: https://bit.ly/2q8QIWz
-Articulated Boom Arm with Cam Mount: https://amzn.to/2Hlo2AX
-Shure Beta 87A https://amzn.to/2rNPnoW
-EV 635A Omnidirectional Dynamic Mic https://amzn.to/2pR8HQT
♠BOOKS
-RCA TUBE MANUAL http://amzn.to/2GOBVqS
-DESIGN AND CONSTRUCTION OF TUBE AMPLIFIERS: http://amzn.to/2HSNMne
-Designing Tube Preamps for Guitar and Bass: http://amzn.to/2DK5tmt
♠2006 FENDER AMERICAN STD TELECASTER PICKUPS
-TV Jones Magnatron Neck: https://amzn.to/2q1zQjD
-Seymour Duncan Vintage Stacked Bridge: https://amzn.to/2GyZjrK