22-10-2015, 09:26 AM
(This post was last modified: 22-10-2015, 09:28 AM by oceanobsession.)
Hi folks, ive managed to buy three avo mk2 valve testers they are all working but 2 off them have worn set zero pots , there are 2 pots both work with one spindle one behind the other , one is 1400 ohm and the other is 500 ohm , now there only appears to be three wires connected on the circuit diagram , both pots are one turn , I have read on another forum that someone has replaced both pots for a 470 ohm 10 turn pot
which works fine you just have to remember to back it right off before starting the test , I have the parts list and wiring diagram but cant get my head around it , I think the current goes throuth both pots at the same time they are r1 and r2 , on the mk4 you have course and fine , if
I show a picture of the wiring diagram would someone who may be a little bit more intelligent than me have a look and say what you think , thanks phil.
which works fine you just have to remember to back it right off before starting the test , I have the parts list and wiring diagram but cant get my head around it , I think the current goes throuth both pots at the same time they are r1 and r2 , on the mk4 you have course and fine , if
I show a picture of the wiring diagram would someone who may be a little bit more intelligent than me have a look and say what you think , thanks phil.
