Samsung surplus Chassis K15A Power Supply Problem

[Min]

Share ko lang itong trouble ng Samsung TV power supply problem na pumasok sa shop. OK na ung unit as reference nlng itong post.

Eto ang symptoms.

1. Standby power lng sya. LED power indicator ligthed ( green)
2. Measure voltage sa secondary B+ malikot ang reading naglalaro sa 130 to 150V unstable. ( normal should be 125V )
3. Kpag pinindot power button bumabagsak ang B+ 115V rapid drop return to standby mode.

Culprit: Open resistor 1/4w 120k R821.

Solution: Repalce resirtor OK na sya.





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[Antonio]

nice.....................+1

gud am............................

[mcleod]

Share ko lang itong trouble ng Samsung TV power supply problem na pumasok sa shop. OK na ung unit as reference nlng itong post.

Eto ang symptoms.

1. Standby power lng sya. LED power indicator ligthed ( green)
2. Measure voltage sa secondary B+ malikot ang reading naglalaro sa 130 to 150V unstable. ( normal should be 125V )
3. Kpag pinindot power button bumabagsak ang B+ 115V rapid drop return to standby mode.

Culprit: Open resistor 1/4w 120k R821.

Solution: Repalce resirtor OK na sya.





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thanks +1 ka sis sa akin 31+1=32!  

malaking tulong ito sa mga "new bee" na tulad ko! he he he!   

[tomee]

hind 120k..123k un original replace nun

[Min]

hind 120k..123k un original replace nun

Ganun ba? wala kasi ako diagram Eh ang basa ko ganun . So anu sis ung original na color nung resistor? Tsaka 120k or 123k I think wala nman malaki epecto.

Tnx narin for correcting.

[pete]

+1 ganda talaga na cam mo hehehe

[Min]

+1 ganda talaga na cam mo hehehe

Tnx sis pete





+1 kay sis tomee for the correction. Eto uli ung resitor and i admit tinantsa ko lang kasi malabo na talaga kulay . At 125v nman nasukat ko sa B+ .Pero 5 band sya.