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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 17
Sharp66FW-53H DA100Dead - LOPTr s/c, C720 100µ 200v split openopto-coupler (IC705) and the two damaged components above (Q601 & C720). Fit avalanche diode across C720 to prevent future damage (cathode to positive). A new TEA5101A (IC1801) was also fitted on the CRT panel as a precaution14-09-04
Sharp66FW-53H DA100Stuck in standby ,only orange LEDReplace opto coupler IC705, Q601 (BUH 515), Q5408 / Q5407 and R5425 (470ohm) on tube base. C720 (200V/100uf.) Add avalanche diode RH-EX0875BMZZ across C72014-09-04

Sharp66FW-53H DA50WLOPTr BUH515 fails at sw onCheck for dry joints in line driver & o/p stages & replace C607 33025v in driver14-09-04
Sharp66FW53HDead with bangC720 blown, R765 & 766 100R sm o/c, R623 1R o/c & Q601 BUH515 s/c, caused by opto IC501 MOC810614-09-04
Sharp66FW53HLOPTr repeated failureLOPTx faulty14-09-04
Sharp66FW53HRotated pic (not horizontal)Replaced the following in rotation control cct on crt base - IC1601 VHIBA4558F/-1 (BA4558 ic), Q1603 VS2SC2412KQ-1 (2SC2412 trans), Q1604 VS2SA1037KQ-1 (2SA1037 trans)14-09-04
Sharp66FW53HSt/by onlyR714 560k start up res - also check R713 560k14-09-04
Sharp66FW53HSt/by onlyD735 (RH-EX0875BMZZ), IC705 CNY17F-2 (RH FX0110BMZZ, C720 100µ 200v - use heat sparingly when fitting new opto14-09-04
Sharp66FW53H DA100Constant tripBypassing prot (s/c pin 15 IC702 to chassis) brought pic on with limited functions - sm NVROM chip faulty & adj geometry settings (maunual reqd)14-09-04
Sharp66FW53H DA100DeadIC 705 RH-FX0110BMZZ, CNY17F-2; C720 RC -EZ0258CEZZ, 100UF 200V; D735 RH-EX0875BMZZ DIODE AVALANCHE; D712 RH EX0419BMZZ, DIODE15 ZENER; Q701 RH-TX0198BMZZ S5410N80A ; Q702 RH-TX0182BMZZ 2PD602AR[s.m.]; Q703 RH-TX0151BMZZ 2SD2391Q [s.m.]14-09-04
Sharp66FW53H DA50WContrast level reduces aft 20 minsIC1801 TEA5101B RGB chip on crt base14-09-04
Sharp66FW53H DA50WSound distIC1300 sm chip on plug in pcb overheats & contaminates board - exchange boards reasonable price pt no DUNTK7285BMW114-09-04
SharpDA100 66FW53HDead - LOPTr s/cCheck for dry joints C613 & opto14-09-04
SharpDA100 66FW53Hdead, stby LED is onQ5407 2SA1837 and Q5408 2SC4793 s/c on CRT base14-09-04
SharpDA100 66FW53Hgreen gun reduced to give a magenta piccorrupted EEPROM IC1003 (RHIX1603BMZZ)14-09-04
SharpDA100 66FW53Hnarrow pic with E-W errorreplace IC801 (RHIX1688BMZZ)14-09-04
SharpDW100 66FW53HDead - usually IC705 opto is to blame - Pt. No. RH-FX0106BMZZchanged to RH-FX0110BMZZ - When the opto fails it usually takes out the line output transistor(BUH515) and the feed resistor to the line o/p stage 1R2W resistor. You need to add a 145v avalanches diode to the circuit on the print side directly beneath C720(H.T. reservoir cap) which also will need to be replaced.14-09-04
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