Original power amp board.. a few issues and proving difficult to service into working condition,,So out with it!And a 120 Watt Class D amplifier installed more efficient and powerful.The ready made module fitted in well and uses the original Sessionette 75 power supplyAll back together for some testing… worked but a bit of hum (and these can be 100% hum free…Noticed one electrolytic needing replacement so changed all of themSwitch photos so that I can resolder then after disconnecting to remove the pcbSwitches removedBoard out!Both main volume pots were very cackly and servisol did not cure them so I took them apart and cleaned them by hand (seemed to have oil inside!)Resistive service cleaned up nicely!Took the cab apart to clean.All cleaned up and a new Eminence Legend speaker installed (can handle the full 120 Watts(Caps all changed and the hum removed!2 tops were missing on some knobs I had some spare grey tops so I used them on the Gain knobs to help them stand out in gig situationsSounding good with my Telecaster and so so loud… (though it can be turned down)Unit now for sale Nice 1984 Sessionette in for repair. Well used crackly pots.. and the power amp board somewhat shot.. These amps are well designed great sounding 1×12 amps. Light but able to push out a big sound. Also interesting is the design. Solid state and with an over drive circuit after the tone stack! Diode overdrive. So serviced repaired crackly pots and put in a new power amp board. 120 Watt Class D power amp. Also new Eminence Legend speaker. After all this work she sounds great and should work for many years to come. It will make someone a real nice all in one combo!