Author Topic: Polar T3000 CRT Trace is very dim, even at maximum intensity. Help  (Read 229 times)

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Offline aqibi2000

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I have a Polar T3000 which has a very faint trace on the CRT.

I would like to have some support to adjust the trimmers to the appropriate levels.

The unit uses the same tube as the T2000/2500/4000/6000

Will take pictures soon when someone chimes in.

Thank you
Tinkerer’
 

Offline aqibi2000

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Re: Polar T3000 CRT Trace is very dim, even at maximum intensity. Help
« Reply #1 on: December 11, 2019, 03:04:13 pm »
888070-0

Images attached. Blue potentiometer R105 is the Focus adjustment.

There is a 1500V line from the voltage doubler circuit in the corner on a separate riser board (large caps and diodes) which I cannot measure since my equipment is only suitable for up to  1kV.
« Last Edit: December 11, 2019, 03:07:29 pm by aqibi2000 »
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