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Old 5th November 2012, 09:39 PM   #991
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Trimmer desoldered measured always 215 ohms
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Old 5th November 2012, 09:51 PM   #992
Salas is offline Salas  Greece
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Between wiper and outer pins it must be checked.
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Old 5th November 2012, 10:00 PM   #993
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Try a 47R in its place across outer trimmer pin pads on the PCB.
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Old 5th November 2012, 10:05 PM   #994
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Wiper one output 2 ohms fixed, wiper the other oiutput 217 ohms fixed.
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Old 5th November 2012, 10:11 PM   #995
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Let's continue tomorrow, thanks Salas.
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Old 5th November 2012, 11:19 PM   #996
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Quote:
Originally Posted by merlin el mago View Post
Wiper one output 2 ohms fixed, wiper the other oiutput 217 ohms fixed.
Its a bricked trimmer. Discard it.
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Old 6th November 2012, 11:27 AM   #997
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Quote:
Originally Posted by Salas View Post
Try a 47R in its place across outer trimmer pin pads on the PCB.
Connected 47R in place of trimmer, see attached pics with measurements.
Attached Images
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File Type: jpg DSC00021.jpg (658.3 KB, 72 views)
File Type: jpg DSC00022.jpg (484.0 KB, 67 views)
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Old 6th November 2012, 11:33 AM   #998
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I tested before with new 200R trimmer & with full open trimmer 200 ohms I measured 30mA in TP (current test point) with B+ 290V

I need a trimmer with more ohms? or is something bricked or wrong?
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Old 6th November 2012, 02:01 PM   #999
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What Vin and Vout you have and what happens if you lower Vout?
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Old 6th November 2012, 02:19 PM   #1000
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What voltage is C1?
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