Hello,
Well, this one is for my mother in law ;-) So, you know the level of importance...
It's a year 2003. model 32" LCD TV Samsung LW32A23W. Quite solid and quality TV as I can see... But, TV came to me year and a half ago. Initial symptom was "sometimes it won't turn on". Really, TV sometimes turn on OK, works OK, you can switch it on/off with remote or soft buttons. But sometimes it fails to turn on with soft switches or remote. Relay clicks, LED is orange (not green) and it's stuck. Once when you are stuck in that point you must turn it off with hard power switch or eject AC plug, and than retry. After few retries TV would switch on OK again.
Now, I left it aside to repair it when catch some free time, and year and a half has passed ;-) Yesterday I finally decided to troubleshoot it and repair. Now after year and a half in storage it won't power on at all. Problem deteriorated, when TV is plugged to AC and hard power switch is turned ON, relay clicks, LED is orange and that's all. No response to soft switches or remote.
First I was sure it's caps because problem deteriorated over time, but I checked PSU caps with ESR meter, all caps are OK. I didn't checked caps on inverters, t-con and digital board. I have no ideas what to check next.
Please, could you give me some advice, where to start, what to check...
Service manual is attached.
Thank you!
Best regards,
Suad
Well, this one is for my mother in law ;-) So, you know the level of importance...
It's a year 2003. model 32" LCD TV Samsung LW32A23W. Quite solid and quality TV as I can see... But, TV came to me year and a half ago. Initial symptom was "sometimes it won't turn on". Really, TV sometimes turn on OK, works OK, you can switch it on/off with remote or soft buttons. But sometimes it fails to turn on with soft switches or remote. Relay clicks, LED is orange (not green) and it's stuck. Once when you are stuck in that point you must turn it off with hard power switch or eject AC plug, and than retry. After few retries TV would switch on OK again.
Now, I left it aside to repair it when catch some free time, and year and a half has passed ;-) Yesterday I finally decided to troubleshoot it and repair. Now after year and a half in storage it won't power on at all. Problem deteriorated, when TV is plugged to AC and hard power switch is turned ON, relay clicks, LED is orange and that's all. No response to soft switches or remote.
First I was sure it's caps because problem deteriorated over time, but I checked PSU caps with ESR meter, all caps are OK. I didn't checked caps on inverters, t-con and digital board. I have no ideas what to check next.
Please, could you give me some advice, where to start, what to check...
Service manual is attached.
Thank you!
Best regards,
Suad
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