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Daewoo 27'' TV

TV will not power on? Checked internal fuse and it is good. Checked voltage up to the relay. Not sure if the relay is latching or not?

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Many times the power supply or the high voltage board is the culprit with this tv. Though instead of spending the money to buy a new part and fix this, I would recommend upgrading to a newer LCD tv since they are fairly cheap. Is there anything clicking or anything at all that you can add to help narrow down the problem.


Benjamin

Posted on Jul 11, 2009

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Posted on Jan 02, 2017

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you need to check the voltage output of your power supply section.This power supply supply is a switching type power supply.there is a chopper transformer in there.its supply is a dc voltage unlike any other transformer which is AC supplied on the primary..First step.
1.Using a multitester measure the primary supply it is a DC voltage around 220v - 110 VDC
2.Measure the secondary output.The out put is AC voltage the supply for the B+ going to plyback is 115vdc the second output is 12v run through a regulator and the regulator lower the voltage to 5vdc.this 5vdc supplies the system IC and the jungle IC.this ic process the switching of the plyback transformer and the plyback transformers output supplies the voltage of the whole system including your relay in the degaussing section....once the plyback is activated the tv will now turn on...

good luck!Hope i helped you..

please rate my help..god bless!

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DAEWOO TV


If youe tech inclined you can open the unit and see if the fuse is blown if you are uncomfertable on doing that then your going to need to take it into a repair shop.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

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your tv has a  short  circuit, the power supply see that and put away the polarizatio n , you have to check  if transistor of power on flyback transformer is  good
or bad - delfo

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