lg Repair Tips
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Results 77
Results 77
Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
---|---|---|---|---|---|
Lg | CI29H40 PC8KA | There was a bright white screen with flyback lines on this set. The A1 adjustment had very little effect | I found that IC901 TDA6108JF on the tube base was faulty, pin 7 blue o/p and pin 8 green o/p both read s/c to ground. Note: this chip was probably taken out due to the tube flashing over as in my case | ||
Lg | CZ-20E60 11.1 | Stuck in standby with no line drive | R410 o/c | ||
Lg | CF-28A50T PC-58A | Flyback lines on pic | Check resistor R351 in front of TDA8350Q. It should be 3.6 K. I replaced with 3.8 K and it worked fine. Additionaly check: R708, FR704, FR359, Q351, Q345. If fault persists try replacing the TDA8350Q | ||
LG | 21FB32 | Led fica aceso, mas não aparece imagem nem som | IC 805 (SE110) | ||
LG | RP-14K40 | Fonte não Liga | IC501 * 1231CN | ||
LG | RP-14CB20A | Sem audio | R624 - 22K | ||
LG | 21M21MQ | TV liga,funciona por alguns minutos e depois desliga. | R831(123k 1% tolerância) alterada | ||
LG | RP-20CC20 SC023A | TELA BRANCA EFEITO STROBE | SUBSTITUIR SOCKET CINESCÓPIO | ||
LG | Various | Modifying R/C to access service modes | There is a service remote availiable but if you have a remote which uses an SAA3010T IC , simply connect a tact switch between pins 1 & 11 to access the service mode . | ||
LG | LV710 | Wont tune - "SAFE" displayed | Sus EEPROM | ||
LG | KE14U73 Combi | Swirling lines & static pops on pic | poor earthing of the deck to the screen large VCR screening can | ||
LG | KE14U73 | St/by only | HT present but no 8v supply to IC500 jungle chip pin 37. D850 in psu leaky | ||
LG | CI21T24F | St/by only - red LED lit no power to psu pri | Dry joints RL108 relay | ||
LG | CI20E20 | Dead with STRS5707 chopper chip & bridge rect s/c | Also replace 4 x elects in psu | ||
LG | CI14B50F 11.1 | St/by only - no line dr | No 12v supply to line dr trfmr Tr101. Check back from pin 15 chopper trfmr - R410 0R1 o/c & dry joints chopper trfmr | ||
LG | CF28C22F etc | Field collapse | Fit mod kit KITPC33J (7 parts inc) | ||
LG | CF25A50F | Reverts to st/by aft 2-3 secs, HT drops to 60v | IC351 FOP chip TDA8350Q & FR350 10R fusible | ||
LG | CF25A50F | Field mod when FOPTr has blown | Fit TDA8350Q & use heatsink compound as well as the grey thermal transfer pad between the chip & the heatsink. Change C352 to 22mfd (was 47mfd) 50 volts Change C708 to 22mfd (was 47mfd) 100volts . This is located to the left of the LOPT on the 45 volts rail. Change FR359 to 22ohms half watt fuse resistor (was 10 ohms) This is also located to the left of the LOPT on the 45 volts. rail. Add a 0.01 mfd cap on pins 8 & 9 of the frame chip & 0.1mfd between pins 7 & 8 (both 100volts) | ||
LG | StudioWorks SW57i / CS590 | com a largura do horizontal maior do a vizualização da tela, mesmo com controle da largura no mínimo | Obs CA-46 verifique o transistor de largura, pode estar em curto, tire-o da placa e vê se a imagem encolhe, se encolher troque-o, se não verifique componentes associados!!! | ||
LG | StudioWorks SW563a | Não liga,tensões fonte ok | Já toquei fly,micro,oscilador e não resolveu o problema,o led fica bem fraco na cor laranja. Se a fonte deste monitor estiver ok ,micro ok, oscilador ok,memoria ok,trocar o cristal oscilador do micro.Resolveu o problema. |