Another AVO MK4 valve tester thread
 

Hello everyone,

I'm currently restoring a mk4 that was in battle scarred condition, upon re-installing all the front panel rotary switches (was a struggle in the cramped space) I've noticed 4 snapped wire's.

There is a snapped red lead on the last wafer/deck of the electrode switch, the grey lead from one side of contacts of A1/A2 dp switch and a white lead on the mains switch.

Would anyone happen to have a picture of the internal sides of the rotary switches showing where these lead connections for these wires go to?

Thanks,

Re: Another AVO MK4 thread
 

Ok, bit of an update. Worked out where the white lead of the mains switches goes to, straight to the set mains rotary. Still trying to work out what connector a broken red wire from R38 24kohm resistor goes to and the grey wire from the unlimited/anode1-2 toggle switch connects to on the electrode selector switch.

Re: Another AVO MK4 thread
 

Model 8/9 presumably?

Re: Another AVO MK4 thread
 

VCM Mk4 valve/tube tester.

Re: Another AVO MK4 valve tester thread
 

Thread title updated

Re: Another AVO MK4 valve tester thread
 

Here is a picture:

Note the red lead close to each near the switch.

Re: Another AVO MK4 valve tester thread
 

Update to this thread, traced the wires and fixed the issue by a photo provided to me elsewhere.