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TV Daewoo Dsc-3670 chassis: sc129 ... burns the transistor j6920

DAVID RECALDE
hace 5 años
hace 5 años
Good afternoon friends; I have a problem with a Daewoo TV model DSC-3670, which burns the J6920 horizontal output transistor .... I already checked the flyback but it seems to be good ... I replaced the transistor and burned it again. Check part of the horizontal section and I can't find items in poor condition ... If a colleague could help me with any suggestions I will be very grateful.
franciscovallarta
hace 5 años

comment if it is instantaneous to the ignition or this is overheated and damaged after a while ... greetings.

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DAVID RECALDE
hace 5 años

This is my colleague ... It burns instantly to turn it on ... I don't have time to take measurements

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markuslemon
hace 5 años

You already checked the capacitors of the fly area and mainly the one connected to one of the pins of the tsh

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DAVID RECALDE
hace 5 años

Not yet, buddy ... I'm going to check them out ... Thanks a lot for advice

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franciscovallarta
hace 5 años
hace 5 años
few components damage the horizontal transistor to the nstante, first you must check the correct regulation and output voltage of the source, the tuning capacitors that already indicated to you, a pronounced short in the yoke in its horizontal coil, and most commonly the flayback, of which you comment that it seems to be good, but you are not sure and you are not tested with another one., to avoid damage to the tsh, put a serial focus of 60 wats on the bmas power supply at the entrance of the flayback, if the focus is Light up intensely, you have a short ... regards
DAVID RECALDE
hace 5 años

Thank you, colleague .... I will apply your advice

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