LG 080A TRO free download

File name 080A_TRO.pdf

Trouble Shooting 1. NO PICTURE ( SOUND OK ) CVBS Signal ? Check MAIN1 Q026(E) Waveform. (2Vpp) YES NO NO Check around Waveform of AV Board Q200(E) ? Check Tuner(TU101)VIDEO output IC200 YES NO Waveform of AV Board IC202 #11 ? Check around IC201, 202 YES NO Waveform of MAIN1 IC501 #63 ? Check AV Board VQ202(E) YES NO Check around IC501 #37, #38, #39 Waveform of MAIN1 P503 #5, #7, #9 ? Output circuit. YES Waveform of CPT Board NO Check around CPT Board IC901R/G/B #3 ? Q901R/G/B YES NO Waveform of CPT Socket Cathode Check around IC901R,G,B (RK/GK/BK) ? - 17 - 2. NO SOUND (PICTURE OK) < RF > Waveform of AV Board IC7 01 Waveform of NO NO Check #47,48,50,51,53,54,56,57 Check JA202 Jack MAIN1 Q022(E) at each Mode ? ( SIF ) ? TU101 YES YES Waveform of Check YES NO AV Board IC701 around #67 ? Q706 Waveform of AV Board NO IC701 #27,#28,#25 ? Check around IC701 YES Waveform of MAIN1 NO Check around AV Board IC601 #7,#11 IC602 #7 ? Q703,704,705 YES Waveform of MAIN1 NO Check around IC601 #2,#4 IC602 #4 ? IC601,602 YES Check AV Board JA501, Main1 P602 Connector - 18 - 3. NO PIP