Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

 
 
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Ian Ian is offline
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Default Daewoo TV startup problem

Hello there,

I'm trying to diagnose a startup (I think) problem on my 6 year old Daewoo
2898ST CRT, with the aim of repairing it myself (as I can't afford to
replace or have it repaired at the moment). I used to tinker with
electronics a long time ago and I'm aware of the dangers and precautions
needed when working inside TVs and monitors.

Service manual here;
http://www.eserviceinfo.com/download...oo_2594ST.html

The set was working fine then made 2 popping sounds and went off, It didn't
blow any fuses when it went off. It now makes a constant ticking noise from
the psu area.

If it was a HOT failure would you expect it to have taken out a fuse?
I get no voltage across the collector / emitter of the HOT, do I have to
remove the HOT to check it for shorts or can I do it in situ and what should
I be looking for?

Or is this a power supply problem and how / what should I start to test?
I'm currently reading this smps troubleshooting guide;
http://www.repairfaq.org/sam/smpsfaq.htm#smpsmcp
but I'd appreciate any and all help in pointing me in the right direction.

Thank you,

Ian



 
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