MikeyDee
Active member
I just acquired a B&K 467 CRT tester.
For the most part it seems to work fine, except that the heater voltage control will cut out and then not work until the unit is off for a short time.
The heater pot is sort of crunchy when I turn it. All the other pots are very smooth.
Also, I cannot calibrate the heater voltage with R16 (as noted in the manual). R16 is working (resistance changes when turned) , but no change is made to the heater voltage when I turn it.
I'm assuming that this heater voltage pot is bad. I've never seen a pot that fails when heated up and then works when cool. So maybe it's something else.
Any suggestions on what to check or replace. Also, what would be a suitable replacement for the bad pot?
Thanks,
For the most part it seems to work fine, except that the heater voltage control will cut out and then not work until the unit is off for a short time.
The heater pot is sort of crunchy when I turn it. All the other pots are very smooth.
Also, I cannot calibrate the heater voltage with R16 (as noted in the manual). R16 is working (resistance changes when turned) , but no change is made to the heater voltage when I turn it.
I'm assuming that this heater voltage pot is bad. I've never seen a pot that fails when heated up and then works when cool. So maybe it's something else.
Any suggestions on what to check or replace. Also, what would be a suitable replacement for the bad pot?
Thanks,


