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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: 26
HitachiCL1409RNo colourR519 100R 1/2w not properly soldered to board14-09-04
HitachiCL1709Does not start up. Overvoltage protection circuit active.Check replace R951/39K R953/47K and D952 Zener.14-09-04

HitachiCL1709Does not start up. Overvoltage protection circuit active.Check replace R951/39K R953/47K and D952 Zener.14-09-04
HitachiCL2114Goes to stby immediately after switch on. +B with no load is 130V. Should be 115.Resistor 39K near +B adjustment pot has gone high to 48K. To troubleshoot, overvoltage thyristor near to LOPT may be pulled off the chassis. However be cautious with overvoltages!14-09-04
HitachiCL2114Goes to stby immediately after switch on. +B with no load is 130V. Should be 115.Resistor 39K near +B adjustment pot has gone high to 48K. To troubleshoot, overvoltage thyristor near to LOPT may be pulled off the chassis. However be cautious with overvoltages!14-09-04
HitachiCL2524RDeadReplace LOPTr BU2508AF, check R951, 952, 953, 954 &Q703 thy14-09-04
HitachiCL2524RLack of height with no adjTDA836214-09-04
HitachiCL2864TADead except for flasing red ledD704 BY228 on lop sub panel s/c14-09-04
HitachiCL2864TAHum on sound with pic instabilityReplace C916, C942 & C957 in psu14-09-04
HitachiCL2864TAPSU tripping - went off with a bangOverload on LOP caused by IC800 TEA5101A RGB o/p chip s/c14-09-04
Nokia7176 ClassicSt/by only with led pulsingNo line drive; VK22 BC337 sm u/s14-09-04
Nokia7177 ClassicDistorted sound left chanVA81 BC858B sm14-09-04
Nokia7177 classicGoes to st/by after 2 - 3 minsVO71 BC858C sm in psu (was same fault on dummy load)14-09-04
Philips28CL6770Dead - no startup volts from usops 5255Res 3249 270 or 220k o/c14-09-04
Philips28CL6770Dead apart from Green LED & "Q" displayedLOPTx (SEME cheapest)14-09-04
PhilipsFL1.0 2828CL6770/05ZLow signal gainTuner - send to MCES for repair14-09-04
PhilipsFL1.0 28CL6770/05St/by only - LOPTr BU508AF s/cCaused by arcing from scan coil connector - may also damage sm prot comps14-09-04
PhilipsFL1.1 28CL6770/05at switch on green LED comes on, then switches to stbyDJ on scan coil plug/socket causing R3516 to go o/c and Q7512 BC548C, Q7513 BC558C to go s/c14-09-04
PhilipsFL1.10 28CL677/257St/by onlyLOPTr BU508AF s/c due to dry joints scan coil plug14-09-04
PhilipsFL1.10 28CL6770Dead - LOPTr s/cCheck for dry joints at scan coil plug14-09-04
PhilipsFL1.10 28CL6770/252St/by onlyLOPTr s/c due to dry joints scan coil plug or R3347 in psu risen from 75k to 100k (in set HT network)14-09-04
PhilipsFL1.10 28CL6770/25ZDead - LOPTr s/cDry joints scan coil connector - can run psu on dummy load by removing L5511 & disable prot by s/c base/emitter of sm Tr 738414-09-04

PhilipsFL1.10 28CL6770/25Zint. sound distortion (sounds like machine gun fire) only when an external unit is switched on (e.g. VCR, sat. box etc)change Xtal 1602 (482224280276) or use non-fully wired SCART lead14-09-04
PhilipsFL1.10 28CL6770/25Zno line phase lock (RH side of pic in the LH of the screen)R3511 10R 0.5W o/c (482211652176), it provides sync feedback from LOPTx to TDA2579A14-09-04
PhilipsFL1.10 28CL6770/25Zstuck in stby, red LED onSOPS panel faulty, check R3537, R3514, if faulty check T7512, T7513 BC548C, R3515,R3516 2R7. Part nos: SOPS panel - 482231031921, resistors 2R7 - 482211652206.14-09-04
PhilipsFL1.10 28CL6770/25ZTrips when sw from st/byTDA1521 Audio o/p IC s/c14-09-04
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