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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: 917
SonyAE1C KV2922UBlank raster only when A1 advanced & no R/Cno 12V supply traced to Q603 a 2SB1357 o/c C to E this is in the standby switched 12V supply.14-09-04
SonyAE1C KVA2512UCrackling sound & OSD flashes on/offCheck audio o/p chip joints IC251 & 261, 5v reg IC604 (under strut) & CV1101 on A1 board - a 39pF fixed cap will do in lieu14-09-04

SonyAE1C KVM2531Col intReplace sub carrier trimmer with 22pF fixed cap14-09-04
SonyAE1C KVM2531UBands across screenDry joints IC60414-09-04
SonyAE1C KVX2142UDead apart from LED flashing once every 12 secsOnly 7v from 12v reg/sw tr Q607. D618 5v6 zener leaky14-09-04
SonyAE1C KVX2532USquegging line freq or dead if left on too longQ804 LOPTr s/c due to dist line wfrm - R822 1k in Q805 coll feed o/c14-09-04
SonyAE1C KVX2552ULoud crackle int & pic goes offCheck dry joints IC604 & D612 located under strut14-09-04
SonyAE2"Txt not available" message on screen & menu screens shifted to rightR38 750k or IC101 SDA5248-5C1 Txt dec chip pt no 8-759-166-41 on Txt pcb o/c14-09-04
SonyAE2Chopper TR Q601 s/c ( BUZ91A ) f.e.t.Check R604 ( 150K ) & R610 ( 180K )14-09-04
SonyAE2Cuts out: goes into protection mode: RGB lights edD/J on IC1501 Field output IC14-09-04
SonyAE2Dead - Q601 BUZ91A chopper s/cCheck R610 180k, R604 150k14-09-04
SonyAE2FAILURE OF VERT OUT IC 1501REPLACE TDA8179S WITH STV9379 8-759-192-71 , AND CHANGE C1506 1-130-777-0014-09-04
SonyAE2Field non lin bands/lines across screenIC561 CXD2018Q 48 pin sm chip faulty on panel M14-09-04
SonyAE2Field rollingIC501TDA2595/V9 pin 9 field pulse has noise superimposed on it - working at 60Hz - chip faulty - pt no 8-759-513-4814-09-04
SonyAE2Front led flashing 13 times, frame problemsReplaced the frame IC TDA8179 with a STV9379, O/c 0.47ohm res pin 7 FBT neg 15 volt supply to the output chip.14-09-04
SonyAE2Int cuts out & eventually reverts to st/by with LED flashing 13 times (field fault, X ray prot or excess current 135v rail)Fault in excess current cct on board D where D620 int o/c 1N4148 used as replacement14-09-04
SonyAE2Int goes to st/byDry joints R854 depriving field o/p supply & causing prot shutdown14-09-04
SonyAE2Int pic blanking leaving OSD & dark green rasterAdj auto green cut off & adj grey scale using electronic screwdriver settings14-09-04
SonyAE2LED display indicates set in protection modeDisconnect protection line from micro if set comes on with small field EEPROM u/s14-09-04
SonyAE2No colReplaced TDA9145 dec chip IC301; TDA4660 chroma del line; Xtals X301/214-09-04
SonyAE2NO COLOUR WITH VTR PLAYBACK ESP. 2nd GEN COPIES ,TO TDA9145N3C Pt. No. 8-759-343-40 , REPLACE L307 ( 4.7uH ) BY LINK WIRE REPLACE R316 ( 33k ) BY A 100k Pt No 1-216-097-0014-09-04
SonyAE2No sound/pic - 1 led only litdry joints fop chip - also check other areas for drys14-09-04

SonyAE2ODD LINEARITY FAULTS LOOKS LIKE RINGINGCXD2018Q IC561 48 PIN SURFACE MOUNT DEVICE ( GOOD LUCK!! ) Pt-No 8-752-347-9214-09-04
SonyAE2PERIODICAL SWITCHING OFF AND ON ( 10 secs )REPLACE IC003 WITH AE20 TYPE VERSION V2.8214-09-04
SonyAE2Pic goes narrow with lines & high pitched whine LOPTxHT low at 70v - Q613 2SA1162G in audio prot cct faulty - critical pt no 8-729-216-2214-09-04
SonyAE2Pic int blanks out then shuts down & restartsLoss of field o/p - dry joints fop chip (next to lopt by back panel)14-09-04
SonyAE2RANDOM SPIKES AND DIST. HIGH SOUND LEFT SPEAKERADD 3K3 RES AND 0.015mfd CAP PARALLEL TOC20114-09-04
SonyAE2Set comes on then collapses into lines in the centCheck H.T. for 119V if low at 70V Q613 IN AUDIO PROTECTION CCT Pt No 8-729-216-2214-09-04
SonyAE2Set will only display one station if another is seEAROM ( ST24C16 ) Data corrupted replace & set up14-09-04
SonyAE2Shuts down aft 30 secs then sw back on aft few mins then repeats sequence - no leds litHT measured 61v (st/by mode) - st/by 5v to micro low at 0.7v. Cct prot PS681 int high res (On board A near front adj to board D)14-09-04
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