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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

Found: 36
SaishoCM145RDead - no ac to main pcb as relay no operatingSw tr not driven as M491BB1 control chip u/s14-09-04
SaishoCM159TXDead - psu screams until LOP stage dis'dHT high at 175v (125v). C818 1µ 50v, C806 1000µ 16v, C808 1000µ 25v14-09-04

SaishoCM159TXTDA3562A replacementFit TDA3562A Philips version, Change R513 from 180k to 68k, Change R515 from 120k to 150k' Change R520 from 180k to 1M (only if no colour)14-09-04
SaishoCM16RDead - 2A fuse on side blownC510 1µ 50v, also check STK7308 & D510 across 105v rail s/c14-09-04
SaishoCM2080TDead - HT only 33vLOPTr Q402 2SD1555 leaky & replace STR50103A & R502/3 330k14-09-04
SaishoCM2080TField - only half a picC421 in volts boost cct14-09-04
SaishoCM2080TInt field roll, full vol, into Txt etc at sw onC462 1µ 160v14-09-04
SaishoCM20TTSt/by onlySTK7308 u/s - also check R502/503 120k14-09-04
SaishoCM250RBuzz on soundAfter all attempts failed to cure, replacing tuner fixed it14-09-04
SaishoCM250RInt losing sound/picTV/Video slide sw on back of set int14-09-04
SaishoCM250RNo controls operate apart from Ch+/Ch-st/by button on set jammed in14-09-04
SaishoCM250RNo sound/pic - Field collapseNo 12v at pin 2 TA7698 field chip; R408 o/c, D408 leaky14-09-04
SaishoCM250RNo sound/pic with field collapseR428 1k2 in startr up cct overheating - D405 & R408 1R were faulty14-09-04
SaishoCM260T/TDead - Chopper tr BUT11A s/cReplace C5 4µ7 63v, C7 220µ 25v, IC1 UC3844N, IC13 CNY75B opto14-09-04
SaishoCM260TT ZX5000DeadTr1 BU145A chopper tr s/c, 1.6A fuse o/c, IC13 TIL111 opto coupler - IC1 UC3844 replaced as a precaution14-09-04
SaishoCM2880poor grey scaleCRT low emission14-09-04
SaishoCM2880TXField collapseR515 3R3 2w in psu & UPC1498H field o/p chip14-09-04
SaishoCT1400DeadR501 3R9 5w o/c; IC501 2SC3156 s/c - used BU326A in lieu14-09-04
SaishoCT1400DeadChopper tr 2SC3156 s/c - used BU326 in lieu; D508 s/c - used R2M; R501 3R9 5w o/c; dry joints between main pcb & chopper tr pcb - also replace C508 4µ7 50v 105deg14-09-04
SaishoCT1400Low soundR356 10k 1/2w o/c14-09-04
SaishoCT1400Sound lowR356 10k o/c14-09-04
SaishoCT141XLow soundC303 100pf across if coil leaky14-09-04

SaishoCT141XSync missingR507 1R o/c14-09-04
SaishoCT144RInt noise bars on pic with sound crackleDry joints chassis bonding at regs heatsink14-09-04
SaishoCT144RNo redreplace 3 x caps 0µ4 connected to pins 44. 45 & 46 of TA8659AN chip14-09-04
SaishoCT147RChan stores on all chans together32v tuning supply high at 38v, IC102 µPC574J faulty14-09-04
SaishoCT149TXDead with buzz from spkrLOPTr leaky - check for dry joints line dr trfmr14-09-04
SaishoCT149TXADead after psu rebuildC506 100µ 160v HT smoothing cap o/c14-09-04
SaishoCT149TXAInt start upR414 15k hi res14-09-04
SaishoCT14RNo signalsNo 12v supply to tuner as print has been eaten away on back of pcb by glue14-09-04
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