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Logik tv lcx27wn2

On pressing on button blue screen appeares with some writing to top l/h of screen for a split second then screen goese blank

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  • martin Jun 18, 2008

    logik lcd tv LCX27WN2. have sound but no picture. Tv on std by red led on, press on button led goes to green, after approx 2 seconds sound comes on, screen is blue for a split second with writing to top left of screen then goes blank,but sound is on

  • martin Jun 18, 2008

    LOCIK LCD TV .sound but no picture

  • martin Jun 18, 2008

    this is a lcd tv not a crt

  • martin Aug 02, 2008

    no help from fixya members, but managed to repair myself, fault is on inverter board in the area of the i.c. This chip shuts down if faulty txfmr or light tube, if pin 10 goes above 3.5volts due to fault you can do 1 of 3, 1 = replace inverter board, 2 = repair board down to component level, 3 = cheat like me, solder a led to pin 10 and ground on the inverter board.

    If you try 3 do it on you own back as i take no responsiblity if goes wrong.

    not sure how long this will last.

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Display problem on the main board .check it out

Sounds like a common problem where the Horizontal Output Transistor shorts due to heat, loading by a partially shorted flyback or yoke or old dried heat sink compound. If the HOT is ok then there is probably a short in another component. This can be determined in most cases by isolating each module one at a time. In other words disconnect the audio circuit and try, disconnect each crt separately, etc. If no shorts are determined check the power supply for proper output voltages. All this would need to be done by a tech or someone familiar with the process. Repair cost should not be that much compared to the cost of a new set.

feel free 4 further assistance n keep sending more question n comments or doubts that arise in ur mind regarding this to me.rate the solution as fixya if it helps u understand n solve ur problem

Posted on Jun 18, 2008

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A) Complete main module # 9-1674-01 subbed to new # 9-1674-03R=$250 CDN (LG Electronics) B) TX3200=Flyback # 95-4134-15/31=might be subbed to 95-4480=$65 CDN (LG Electronics) C) QX3200=HOT # 121-1167-01=$14 CDN (LG Electronics)=2SD1539=2SD2578=RCA # 242224=Philips # 4835 130 48074=NTE2302=ECG2302 D) CRX3412=115V B+ rectifier diode # 103-417-07/06A=$4 CDN (LG Electronics)=NTE580=ECG580 E) CX3412=115V B+ rectifier filter capacitor=100Uf,200V F) R3243=110/120 K ohm,1/2W (off the HOT’s collector) found underneath a 3 watt resistor G) Bleeder focus assembly/HV tripler block # A-17196-12/05=$168 CDN (LG Electronics) Other common failures for chassis:GZ: Bad solder connections in bridge and SMPS R3429=open=dead set IC3415 & IC3402=defective=dead set 120 K ohm resistors on crt driver boards module 9-1303

Posted on Jun 18, 2008

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Please post the message that appears.

Posted on Jun 18, 2008

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Posted on Jan 02, 2017

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