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Repair tips

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: 711
Sharp5BSATo enter service modePress chan up & down buttons together whilst sw on tv14-09-04
Sharp5BSAtuner drift - exasapated by pcb flexC1013 100n sm cap cracked & leaky14-09-04

Sharp5BSAVarious inc field cramp, r/c non funct & int lop tr failureC713 1000µ 16v in -10v line14-09-04
Sharp5BSA 37AM23No line drive - some soundQ 605 (s.m. pnp transistor) was O/C14-09-04
Sharp5BSA 51AT15Dead symptoms with psu runningNo line drive base Q603, no 5v supply pin 8 EEPROM IC1002 as 5v reg tr Q704 BC338-40 o/c emitter14-09-04
Sharp5BSA 51AT15Happears dead, LED is greenQ704 BC338 o/s14-09-04
Sharp5BSA 51AT15HCorrupted service mode settings after replacement of Q601/2No stopping when tuning, height and vert posn out - set AFC optione byte to '9F'14-09-04
Sharp5BSA 51AT15HDeadLOPTr, Q509, Q510 & C71314-09-04
Sharp5BSA 51AT15HDeadC713 1000µ 25v hi esr caused failure of Q509 BC635 & Q510 BC338 in field cct14-09-04
Sharp5BSA 51AT15HDeadC716 100µ hi esr14-09-04
Sharp5BSA 51AT15HdeadQ601 BU508DFI s/c (use correct type)14-09-04
Sharp5BSA 51AT15HdeadLOPTr reads s/c in situ, check R622 - one of its ends shorting to earth print14-09-04
Sharp5BSA 51AT15HDead - LOPTr BU508DF1 blownWhen Tr replaced , overheats due to leaky line dr Tr Q602 BC635 - fitted BC639 in lieu (checks ok out of cct)14-09-04
Sharp5BSA 51AT15HDead - no LEDcaps in psu sec plus BU508DF1 & 2SC335-19 dr tr - NOTE MUST use correct replacements or will not work properly IE brushing if dr tr incorrect14-09-04
Sharp5BSA 51AT15HDead - no start upC713 1000µ 25v hi esr & Q601 BU508DF1 LOP tr s/c14-09-04
Sharp5BSA 51AT15HDead BU508DF1 LOPTr s/cReplaced with BU2508DF - given as equiv but DOES NOT work! Use correct Tr & replace C713 1000µ hi esr14-09-04
Sharp5BSA 51AT15HDead st/by onlyNo line drive from MC44007 ic; 5v supply ok in st/by but dropped when sw on - BC338-40 tr cooked up14-09-04
SHARP5BSA 51AT15HDEAD WITH GREEN LEDCHECK Q704 BC33814-09-04
Sharp5BSA 51AT15Hdead, no LED, HT is Okno 5V supply to jungle IC, Q708 BC338 u/s (RHTX0102BMZZ)14-09-04
Sharp5BSA 51AT15HField collapse/ R & G lines at top of picBC636 in FOP stage causes field coll & D504 1N4148 causes lines14-09-04
Sharp5BSA 51AT15Hfield cramp, no OSD, no vol adjustQ510 BC33814-09-04
Sharp5BSA 51AT15HField foldover & no R/C or local controlQ509[BC635] and Q510[BC338]14-09-04

Sharp5BSA 51AT15HGreen LED flashes and dim - no sound/picHT = 113v (should be 105v); Q708 (BC338-40) and D715 (5v1 zener).14-09-04
Sharp5BSA 51AT15HHT high at 114v (105v) & EHT varying (can blow BU508DFI (don't fit BU508DF)ZD717 & 718, Q708 (7v supply) faulty14-09-04
Sharp5BSA 51AT15HInt cuts outHT ok, 5volt supply +5Vb low Q708 BC338-40 u/s14-09-04
Sharp5BSA 51AT15HInt loss sound and/or colour for 1sec .Change C209 from 1uF to 100nF 50v Pt No VCEAGA1HW104M , C808 from 100nF to 47nF 50v Pt No VCKYTV1HB473K ( use only Sharp part14-09-04
Sharp5BSA 51AT15HInt off with screeching causing corruption of AGC & AFC memory settingsQ708 BC338-40 in sw5v - used BD131 as higher powered replacement14-09-04
Sharp5BSA 51AT15Hlack of height and patterning on the screenC713 1000uF14-09-04
SHARP5BSA 51AT15HLACK OF HEIGHT WITH PATTERN ON SCREENREPLACE C713 1000MFD14-09-04
Sharp5BSA 51AT15HLED pulsing, lack of frame. IntermittentC713 1000uF leaky and Q509 (RHTX0108BMZZ) leaky B/C14-09-04
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