Electronics > Repair
HAMEG HM 504
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oldway:
If the 2 transistors of the high voltage oscillator are working very hot, the most likely fault is a defective high voltage transformer.
To troubleshoot this kind of problems, the ideal is to have another osciloscope of the same type as donor for spare parts.
The first thing I would do is to replace this HV transformer by another known as good working and look if this solve the problem.
lionelkjh:
Hello; problem solved. The fault was the capacitor C1061 (33nF / 63V) which was leaking. After replacement, the traces are fine and sharp. Cdt ;)
AwaisN:
Hi,
Could you share the manual/diagrams which you got from Hameg Germany?
Thanks and regards
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