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Equipment Repairs => LCD TV forum => Topic started by: scooby-doo on March 08, 2012,09:14:51

Title: ONN AO42ZID Standby light...trying to start...no backlights
Post by: scooby-doo on March 08, 2012,09:14:51

Hi
Got this Onn tv and found that 3 caps were fluffed in PSU and all the caps were bulging on both the slave and master boards.

Replaced all caps and now found that the tv makes a clicking noise to start up a blue led comes on the master inverter for about 2 seconds then fades....no backlights at all not even a flash and then die again...all voltages seem ok to inverters...23.7v

Anyone come across these inverters for faults, part numbers

Master: 6632L-0448A
Slave: 6632L0449A

Thanks in advance

Title: Re: ONN AO42ZID Standby light...trying to start...no backlights
Post by: Ohm Supplies on March 10, 2012,05:00:08

Hello.

check for a short on MU1 / SU1, its quite common for this to happen

regards
ANdy

Title: Re: ONN AO42ZID Standby light...trying to start...no backlights
Post by: scooby-doo on March 11, 2012,05:48:06

Cheers Andy

I have replaced the boards now....but thanks anyway