Hello everyone. As mentioned in the subject, I'm a newb with limited knowledge in electronic (actually was EE in college but lost steam about the time I ran into E-Mag Field Theory). I do enjoy "tinkering" though. Have had some success repairing car amplifiers and thought to broaden my horizons with this portable lcd tv.
Failure Symptom: Unit powers on and speakers/audio seem to function. LCD video, however, can barely be seen. I've always been led to believe this is most likely a back light issue relating to an inverter circuit failure.
I have identified at least one failed diode at board desginator, D25 (Unit board info below). Have scoured the net looking for ANY service documentation (ie Schematics, BOM with part # and desigs) but have had no luck. I've made a good faith effort to read forums and learn on my own and reached an impasse.
Sorry for the long winded post and I'd appreciate any advice/suggestions you may have.
Kyle
Haier Model HLT71 7" Digital LCD TV
s/n 090801361
PCB: 0010-TVS3970A-F02 THK:1.2MM Rev-0 2009-07-11
Failure Symptom: Unit powers on and speakers/audio seem to function. LCD video, however, can barely be seen. I've always been led to believe this is most likely a back light issue relating to an inverter circuit failure.
I have identified at least one failed diode at board desginator, D25 (Unit board info below). Have scoured the net looking for ANY service documentation (ie Schematics, BOM with part # and desigs) but have had no luck. I've made a good faith effort to read forums and learn on my own and reached an impasse.
Sorry for the long winded post and I'd appreciate any advice/suggestions you may have.
Kyle
Haier Model HLT71 7" Digital LCD TV
s/n 090801361
PCB: 0010-TVS3970A-F02 THK:1.2MM Rev-0 2009-07-11