CasioTone VL5

I bought a CasioTone VL5 for cheap as this unit was listed as not working

• unsure what the main issue was
• checked whether it required center positive / center negative power, turns out its center negative
• learnt abt how to use a power provider unit to provide the amount of power exactly at the voltage a unit requires, in this case it was 7.5V DC
  • also that if current drops really quickly when something is plugged in, it means that the circuit is not working properly as no circuits should be drawing current
• also found out about Circuit Bending
• display still doesn't work, suspect that the component itself has some liquid / sun damage

#Amp repair basics

• amp initial issues: reverb doesn't work, but clean output works fine
• learnt about safety protocols for working with amps, chopstick technique, how to change tubes, basics of tube valves - Valve Preamps for Guitar & Bass - Fundamentals of Amplification