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JCM2000 TSL100 Replacement board (issue 20)
JCM2000 TSL100 Replacement board (issue 20)
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Old 15th June 2019, 11:42 AM   #1
Carlosraj is offline Carlosraj  United Kingdom
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Default JCM2000 TSL100 Replacement board (issue 20)

Hi

I ordered a JCM2000 TSL100 replacement board issue 20 because my old board (JCM2-60-00 issue 5) had a bias shift problem. The new board (JCM2-60-00 issue 20) arrived today. When I wanted to replace the board, I noticed there are some differences. What is my concern are the 2 additional connectors (CON 15 and CON 16). Does anyone know what is to be done with these 2 connectors, where do they connect to. Please assist

Thanks
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Old 15th June 2019, 12:02 PM   #2
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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The main cause of bias issues are the two coupling capacitors supplying the voltage doubler bias network, C43/44.

Have you checked them?
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Old 15th June 2019, 12:45 PM   #3
Carlosraj is offline Carlosraj  United Kingdom
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Yes, I have replaced them, but the problem is still there.
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