|
Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
|
Thread Tools |
14th May 2019, 12:31 am | #1 |
Tetrode
Join Date: May 2019
Location: Melbourne, Victoria, Australia.
Posts: 66
|
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, |
14th May 2019, 12:26 pm | #2 |
Tetrode
Join Date: May 2019
Location: Melbourne, Victoria, Australia.
Posts: 66
|
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.
|
14th May 2019, 12:42 pm | #3 |
Octode
Join Date: May 2016
Location: Oxfordshire/Bucks borders, UK.
Posts: 1,604
|
Re: Another AVO MK4 thread
Model 8/9 presumably?
__________________
Avometer, vintage Fluke and Marconi collector. Also interested in vintage Yaesu and KW. |
14th May 2019, 1:48 pm | #4 |
Tetrode
Join Date: May 2019
Location: Melbourne, Victoria, Australia.
Posts: 66
|
Re: Another AVO MK4 thread
|
14th May 2019, 1:59 pm | #5 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
|
Re: Another AVO MK4 valve tester thread
Thread title updated
|
15th May 2019, 11:44 am | #6 |
Tetrode
Join Date: May 2019
Location: Melbourne, Victoria, Australia.
Posts: 66
|
Re: Another AVO MK4 valve tester thread
Here is a picture:
Note the red lead close to each near the switch. Last edited by Station X; 15th May 2019 at 1:04 pm. Reason: Linked image converted to thumbnail. |
25th May 2019, 12:30 am | #7 |
Tetrode
Join Date: May 2019
Location: Melbourne, Victoria, Australia.
Posts: 66
|
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.
|