60PV250 ZSUS boards EBR67820001.
Got this TV last night, was told picture would come and go. Currently has no picture. Immediate thoughts were ZSUS. Powerup , relays click, 203V Vs available, ysus buzzing, zsus silent.
usual inductor coils cracked solders, reflowed those, can't find any blown fuses, burns or shorted IGBTs.
powered up , still nothing, can hear a faint buzz from the zsus momentarily on startup,probed Vzbias and see 125V on initial startup but switches off and decays to 0 pretty much straight away from turn on.
Anyone got some expeience for this situation?
Currently reading through other threads but common notes are cracked inductors, blown fuses, shorted IGBTs and burnt resistors.
Unfortunately apart from the bad inductors I can't find that smoking gun.
Got this TV last night, was told picture would come and go. Currently has no picture. Immediate thoughts were ZSUS. Powerup , relays click, 203V Vs available, ysus buzzing, zsus silent.
usual inductor coils cracked solders, reflowed those, can't find any blown fuses, burns or shorted IGBTs.
powered up , still nothing, can hear a faint buzz from the zsus momentarily on startup,probed Vzbias and see 125V on initial startup but switches off and decays to 0 pretty much straight away from turn on.
Anyone got some expeience for this situation?
Currently reading through other threads but common notes are cracked inductors, blown fuses, shorted IGBTs and burnt resistors.
Unfortunately apart from the bad inductors I can't find that smoking gun.
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