Utracer3+ Help grid voltage stay at -10,5V

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Jan Borst

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Mar 3, 2025, 7:44:24 AMMar 3

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After several (maybe even many) years mu Utracer suddenly do not work anymore.

Measurement o9f Anode and Screen current function OK, but my Grid voltage stays stubbornly at -10.5V so the tube I am measureing stays cut off.

Do any have some idea what may cause such a fault ??

Thanks in advance !

Jan

Davo

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Mar 3, 2025, 9:19:23 AMMar 3

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Maybe do a calibration test to see if all is okay…

Maybe check if the +5 & +15v supply is working properly…

Do you have the -40v?

Op 3 mrt 2025 om 13:44 heeft Jan Borst <jan....@gmail.com> het volgende geschreven:

After several (maybe even many) years mu Utracer suddenly do not work anymore.

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