Hi Sir,
We have oberved the Z1 and Z2 that are at high temperature, approximately 90°C (194°F).
Zener part that used to reference for EVM parts (BZT52C15S-7).
I attached a file containing measurments of serveral signals around the transformer.
The Z1 and Z2 might be always operation continuously. Maybe it is cause high temperature result.
Does we need to replace other Zener parts or do you have any suggestions?
Regards
