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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: 1905
AiwaVXT1000Dead TV sectIC4 STK7348, R103 1R5 3w, R104 27R 3W, R105 1k 1/2w. C90 1µ 50v was to blame14-09-04
AiwaVXT1000STK7348 chopper chip int failsC88 3300pF 1kv can be the cause even tho' it looks ok14-09-04

AiwaVXT1000 Mk2DeadHt ok at 120v - ICP1 o/c14-09-04
AiwaVXT1000 Mk2DeadSTK7348 s/c pins 3 & 7, also R103 1R5 3W o/c, R104 27R 3w, R105 1k 1/2w & C90 1µ 50v14-09-04
AiwaVXT1000 Mk2Dead - no line driveD7 9v1 zener & C105 330µ 16v both s/c14-09-04
AiwaVXT1000 Mk2Failure of IC STK7348 in tv psuReplace:R102. 33ohmlW Part No S5 34A 330 000 R104 27ohm 3W Part No Sl 330 703 000(6.25UKP) RlOl 33ohm7W Part No Sl 330 862 000(8.37UKP) Also please check and if necessary replace:R103(3.76UKP) R105 Replace as required. R109(4.00UKP) NOTE: Do not replace IC on its own.<<14-09-04
AiwaVXT1000Mk2DeadSTK7348 psu chip & C88 0.0033pf 2kv14-09-04
AiwaVXT1000Mk2Dead TV sect - vcr sect okC88 0.0033µ 1kv burnt; STK7348 psu chip s/c; R109 3R9 7w o/c14-09-04
AiwaVXT1000Mk2No pic sound okC88 3n3 1kv burnt14-09-04
AiwaVXT1000MkIISound no picture.Replace IC4(STK7348) and C88(3n3 1kv).14-09-04
AiwaVXT1010KDead - goes into st/byR515 3M3 , C517 C526 470uF 10v , C524 47uF 63v14-09-04
AiwaVXT1010KInt sw onReplace STK73907, C514 0µ082 pulse cap, Q501 2SK212, Q510 2SC1815. Change R520 to 68k & C524 to 220µ14-09-04
AiwaVXT1010KNo cold start upC524 47µ 10v14-09-04
AiwaVXT1410St/by onlyDry joints power/stby key14-09-04
AiwaVXT1410KPoor start up from cold, patterningC522 2µ 50v, C523 100µ 50v14-09-04
AkaiCT2107MS (Onwa)Int off with blob in centre of screenCheck for hairline cracks around chopper tfmr pins14-09-04
AkaiCT2185-10St/by onlydry joints psu14-09-04
AkaiSP7101St/by onlyReplace C093 sm (on print side)14-09-04
AkuraBaby 10Brightness - no controlD409 o/c14-09-04
AkuraBaby 10Dead - list of psu 2 faultsFault 1: Dry joints on IC402, also check 12V socket. Fault 2: Line output transistor is dry jointed (emitter). Fault 3: Check if fuse holder 5AT is loose. Fault 4: Replace D410 in line stage with two RGP30 in parallel. Fault 5: Check regulator block for dry joints. Fault 6: Check D410 (FR604) in the line output stage.14-09-04
AkuraBaby 10Dead - list of psu faultsFault 1: Check output of regulator IC402. S/C in DC jack may blow the 5A/T fuse. Note: IC402 can cause other faults, such as oversized picture with bent verticals. Fault 2: Check L110 for dry joint. Fault 3: [No 12V at regulator]. Check R402 (1R/0.5W) for O/C. Fault 4: Check line drive transformer (TX EM103) for dry joints. Fault 5: Check print between output and destination of (potted) regulator for O/C. Fault 6: Check line output transistor for broken print. Fault 7: Check fuse F402 and diode D402, damage due to incorrect connection of battery. Fault 8: Replace IC402. Check EEprom chip IC601 (MN1220). Fault 9: Check regulator IC401 (L7812). Fault 10: Check the DC input sockets for high resistance. Fault 11: [5A fuse blown]. Check D412 FR155 diode for S/C a BY299 will do. Fault 12: [Regulator OK]. Check line drive transformer for dry joints. Fault 13: Check mains transformer for O/C. Fault 14: [630mA fuse by switch O/C]. Check bridge rectifier for S/C. Use 1N5401 as replacement. Fault 15: Check IC402, F401 (630mA) fuse and D403, D405 in the bridge rectifier circuit. Fault 16: [F401 blown]. Check D404. Fault 17: [No PSU start up]. Check resistors R301 (330K) and R302 (330K). Fault 18: Check 12V DC-IN socket.14-09-04
AkuraCX10Dead - no standby light.R402 high.14-09-04

AkuraCX10Dead apart from relay click15v across C403 1000µ but only 3v at reg o/p - IC402 AL271 reg14-09-04
AkuraCX10No picture.Efficiency diode FR605.14-09-04
AkuraCX10No sound or picture.DC converter IC ( it has a massive heatsink )14-09-04
AkuraCX10No sound or picture.D410 s/c also check R320 ( 33R ) if higher change it.14-09-04
AkuraCX10Tuner low gainR114 150k & R119 56k or IC201 TAY680AP but then is temp dependent14-09-04
AkuraCX10 (Baby 10)Int deadDry joints inside discrete type reg module14-09-04
AlbaCTV10deadmains tfmr o/c pri14-09-04
AlbaCTV10Dead - st/by onlyD410 OC LOPT SC14-09-04
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