Neonlampen voor Philips PM2421 gezocht (Techniek Overig)

door wellenkino , Biedenkopf, Hessen, DE, 02.10.2017, 17:25 (2608 dagen geleden) @ Florick Wibier

hello again.

I have replaced that neon bulbs by good originals with lens.
The chopper is lightning with correct 190Hz, that is allready.

But this instrument don`t like to work still "overflow"
a test with a pair of russians INS1 was the same result.
I can not find the problem. So I think now, both ore one of the both light sensitive resistors are bad. They work at 190Hz, this is ultra fast for LDRs, and in a low light area, this neon bulbs will not load them full.
The replacement of this LDRs will be the next step.

greetings
Martin