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Equipment Repairs => LCD TV forum => Topic started by: chrissie jones on April 03, 2012,06:58:20

Title: TECHWOOD 42832 HD LCD TV
Post by: chrissie jones on April 03, 2012,06:58:20

this set come with a white screen then this picture comes on with horizontal folding lines then picture comes tidy after 20 min....sounds like screen to me.

Title: Re: TECHWOOD 42832 HD LCD TV
Post by: sabre504 on April 03, 2012,09:46:04

Hi check your PSU secondary voltages on startup then check them again when the screen comes right
could be caps failing

Title: Re: TECHWOOD 42832 HD LCD TV
Post by: Restorer79 on April 03, 2012,10:32:17

Hi Chrissie: Go with Sabre's suggestion, check the voltages & check the Electrolytics on the secondary side of the psu with an ESR meter.
Or to narrow it down use the old Hairdryer / Freezer trick.


Andy

Title: Re: TECHWOOD 42832 HD LCD TV
Post by: jordan on April 03, 2012,11:14:23

Chassis model Vestel 17MB12-3
Check SMD Q-862 on PSU (BC-848) temperature sensitive