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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: 242
AmstradCTV280NDead - squealing psu - HT only 40v approxC926 (22uF 160V) O/C, C608 10 mfd on the same panel was also high ESR14-09-04
AmstradCTV280NField collapse30 volts supply from the LOPT via D407 & R434 (0.68R) was missing as the diode was short & the resistor O/C. These two parts are located to just to the left of the LOPT. The frame chip IC401 TDA3654 was dead short 14-09-04

AmstradCTV280NFlyback lines at topC408 (100mfd 35 volts) 14-09-04
AmstradCTV280NLack of width with no control R423 2k2 o/c - connected to width pot14-09-04
AmstradCTV280NSmall pic varies in size with scene changesC926 22µ 160v; C424 22µ 160v; near loptx hi esr14-09-04
AmstradCTV3012Int line - line drive low in fault conditionR601 4k7 hi res (12k)14-09-04
AmstradCTV3021NDeadF01 2A fuse o/c, Q1 BUZ90A s/c, R5 680k & R4 270k check for o/c14-09-04
AmstradCTV3021NDead - chopper Tr s/c & fuse o/cR4 270k o/c & TDA4605-3 (must have "3" suffix)14-09-04
AmstradCTV3021NDead - LOPTr instantly dies at sw onC602 7n1 1.6kv had hairline crack which couldn't be seen in cct14-09-04
AmstradCTV3021NDead no st/by ledReplace R5 680k 1/2w in psu14-09-04
AmstradCTV3021NMagenta picR209 82k 1/2w on crt pcb o/c & adj grey scale14-09-04
AmstradCTV3021NWhen replacing FETUse BUX91 (BUZ90 will not last)14-09-04
AmstradCTV3028Bright raster with flyback linesDry joints CRT base pcb by ribbon cable14-09-04
AmstradCTV3028DeadMains bridge rect s/c & fuse o/c - fit 2n2 1kv caps across rects to prevent re-ocurrence14-09-04
AmstradCTV3028Dead - no st/byR103 47k hi res14-09-04
AmstradCTV3028No pic via scart - ok with off air sigsVid present pin 15 TDA8361 jungle chip & AV sw volts ok at pin 16 - chip faulty14-09-04
AmstradCTV3028No signals - no supply to AV pin of tunerR124 o/c14-09-04
AmstradCTV3028No tuning - osd okR124 15k back edge of panel in centre o/c14-09-04
AmstradCTV3028NDead - 2A fuse o/c; BUZ90AF chopper s/cR108 270k o/c & LOP tr for tripping14-09-04
AmstradCTV3028NNo tuningR124 15k 1w o/c near chopper tfmr under tube14-09-04
AmstradCTV3032NManual tuningpress 1 - press TV- press menu and hold it, the first menu is for sound keep the button pressed and the OVERVIEW menu appears then release and press menu again this will give you a tuning menu, select the preset number then- with the cursor keys move down to tune and when you get the station you want move down to store then press vol + the word stored appears and then press TV 14-09-04
AmstradCTV3121Dead with psu tickingC5 100µ 400v mains smoother14-09-04

AmstradCTV3121NBlank raster only when A1 advancedR22 0R22 in sec of psu o/c14-09-04
AmstradCTV3121NSt/by onlyR22 0R22 risen in value to 3R614-09-04
AmstradCTV3121NSt/by onlyR22 0R22 safety res o/c14-09-04
AmstradCTV3121NF 11AK12No response from R/C although R/C is outputting a signalWas still faulty handset - dry joints IC giving wrong output codes14-09-04
AmstradCTV3128E/W distC592 0µ68, TDA8145 E/W chip14-09-04
AmstradCTV3128E/W faultyC592 0µ68, TDA8145 E/W chip14-09-04
AmstradCTV3128Field scan only 2 ins plus no sigsR124 15k 1w o/c - supplies tuning & pin 43 TDA8361 jungle chip14-09-04
AmstradCTV3128NDeadpri of the chopper transformer s/c all round (Cpc pt no AM602470003390) When replaced, fast tripping,R112 (5R2, 1/8W) o/c off pin 6 of transformer14-09-04
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