EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: Decee1 on April 11, 2021, 12:32:16 pm
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Hello,
I'm looking for a service manual/schematics for HM7042. Searched a bit on Google and found a ton of Russian sketchy sites which isn't legit.
Got some overshoot issue on the device i'm trying to repair, pretty known for those to get overshoot issues after a long time of service(+20 years)
Pulled out most of the caps on the AC-DC board and checked them on LCR meter only to see them being within spec.
I found the HM7042-5 schematic but they have done some major changes on it since then so much of the circuit is different.
Hopefully somebody can share it.