LG service manuals
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LG tx laptop service manual.pdf |
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LG training pdp 2005 service manual.pdf |
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LG training pdp 2002 service manual.pdf |
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LG training pdp 2001 service manual.pdf |
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LG training lcd 2006 service manual.pdf |
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LG t1 laptop service manual.pdf |
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LG s1 p1 laptop service manual.pdf |
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LG rz 26lz50 lcd tv service manual.pdf |
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LG mu 42pm12x plasma monitor service manual.pdf |
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LG mu 40pa15b plasma tv service manual.pdf |
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LG lw60 lw70 laptop service manual.pdf |
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LG lw20 laptop service manual.pdf |
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LG ls70 laptop service manual.pdf |
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LG ls40 ls50 laptop service manual.pdf |
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LG lm40 lm50 laptop service manual.pdf |
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LG le50 laptop service manual.pdf |
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LG l1733tr l1933tr monitor service manual.pdf |
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LG 50pt81 plasma service manual.pdf |
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LG 47LG90 led lcd tv training manual service manual.pdf |
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LG 42px2rva chassis mf056c plasma tv service manual.pdf |
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LG 42pj550 chassis pd01a plasma tv service manual.pdf |
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LG 42pj350 chassis pd 01a plasma tv service manual.pdf |
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LG 42pg6900 plasma tv service manual.pdf |
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LG 42pg3000 plasma tv service manual.pdf |
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LG 42lh90 led lcd tv presentation training manual service manual.pdf |
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LG 42LG3000 za mfl41037104 chassis ld84a lcd tv service manual.pdf |
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LG 42lc2d lcd tv service manual.pdf |
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LG 42lb1dr lcd tv service manual.pdf |
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LG 37lp1da za lcd tv service manual.pdf |
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LG 37lp1d lcd tv service manual.pdf |
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LG 37lc2d lcd tv service manual.pdf |
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LG 37lb1da lcd tv service manual.pdf |
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LG 32lx4dc lcd service manual.pdf |
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LG 32lx3dc lcd service manual.pdf |
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LG 32lx2d lcd service manual.pdf |
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LG 32lp2dc lcd tv service manual.pdf |
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LG 32lp1dc lcd tv service manual.pdf |
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LG 32lh2000 & 32lh2010 chassis ld91a sb ex si 1249011576 lcd tv service manual.pdf |
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LG 32LG3000 chassis ld84a lcd tv service manual.pdf |
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LG 32LG30 mfl41524403 chassis la85a lcd tv service manual.pdf |
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LG 32lc7d & 32lc55 56 chassis ld73a lcd tv service manual.pdf |
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LG 32lc46 32lc45 32lc4d chassis ld73a lcd tv service manual.pdf |
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LG 32lc41 4r 32lc41 32lc42 32lc43 32lc44 chassis lp78a lcd tv service manual.pdf |
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LG 32lc2da lcd tv service manual.pdf |
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LG 26lx1d lcd tv service manual.pdf |
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LG 26lc2r & 32lc2r 4638029775 chassis lp61c lcd tv service manual.pdf |
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LG 26lc2d lcd tv service manual.pdf |
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LG 23lc1rb lcd service manual.pdf |
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LG 15lw1r lcd service manual.pdf |
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LG 27lc2r chassis lp61a lcd tv service manual.pdf |
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LG 15lc1r 20lc1rb mg lcd.pdf |
How to determine the typical faults and carry out the TV repair?
If the TV is broken - it is almost always possible to repair. Often breakdowns causes lie "on the surface", and the TV repair with the right approach is not particularly difficult. I still do not recommend poking around on their own, but the typical faults and repair methods will describe - just to let you know what awaits you in the repair and did not let the master cheat yourself. So, I present a list of the most common problems.
The TV does not turn on or off
If the "box" is not included, and even the indicator does not light, the source of the problem is mainly the power supply. Often he will burn with voltage drops. The same reason causes spontaneous shutdown equipment. If the model provides protection against unstable voltage, at critical moments it will work and turn off equipment. We are confident that the differences were not? Then, the cause must be sought not only the power supply unit, but in the motherboard - it could appear microcracks. Read more: LG TV TROUBLESHOOTING
TV does not take remote control
Often there is a problem, which has two sources. The first and most common - remote fault. Suffice it fails to drop it or spill liquid on the keys, and it will cease to function. The reason may be more banal - just sat batteries (you will not believe how many times this factor people took for the "damage"). Quite possible that the remote to do with it, and causing the problem becomes a failed control receiver. If everything is in order - to blame, most likely the processor.
Disappeared memory
You are trying to save a list of preset channels, but nothing comes out. The probable cause of the problem can be memory devices. A similar problem: you save certain settings (for example, sound), but after the restart saving technology disappear. In any case, the TV should be aimed at diagnostic memory chip study. If the violation is confirmed - it must be easy to replace.
"Zero reaction" on the buttons
The TV does not respond when you press buttons on the control panel? Rather, the point of contact is broken between the button and the control of its job microcontroller. So first of all you need to check the contacts, and if everything is in order - look for the cause in the failure of the microcontroller CPU.
Poor quality sound
In most cases, the source of the problems with the sound becomes a speaker malfunction. So first of all you need to make sure they are properly connected and all contacts are in good condition. If the diagnosis showed excellent condition and speaker connections, but the problem remains - the reason should be sought in the functioning of the radio channel.
Image not available or the quality of the "limping"
It often happens: the TV is on, sound can be heard, but the "picture" is missing. The reasons for this failure are many: TV repairman in the diagnostic process to determine the true factor that caused the problem. By the way, almost the entire list of problems to solve real:
- Image not available, but the sound is - the reason for failure of the matrix or video amplifier.
- No image and sound periodically lost - this is likely to indicate a problem with the scan.
- The sound is present, the screen lights up, but nothing else happens - probably out of order video processor. There are also more banal reason - the noise in the tuner.
- Image not maximized to full screen - "symptom" damage surplus staffing matrix. Breakdown of personnel surplus module can be connected to the voltage instability or poor-quality operation of the power supply.
- The appearance of a narrow strip of the vertical position on the screen may indicate damage to the transformer urgent scan. Horizontal bars indicate the problem directly with the personnel scan.
- Missing color or monochrome image is turned into - performance breakdowns video amplifier or the video.
Issues matrix
It is in view of not cinematic, but a real matrix, set in modern TVs. The fault of this element is becoming a serious problem, since it can not be repaired, and will need to carry out the replacement. In essence, the matrix - a display element on which the image is built. Matrix can be broken for the following reasons:
● TV screen dropped or hit with a blunt object;
● Liquid has been spilled on the contacts of the matrix;
● installed the defective item;
● item worn as a result of long operation,
Personal injury matrix show multicolored stripes on the screen, the appearance of black circles, hang pictures or his disappearance. Diagnose and replace the matrix element must be an experienced master, since the process involves a lot of nuances (especially connections and settings).
Scan problem
On the vertical deflection problems Several factors point to the TV. In particular, this reduction or vertically offset image misalignment, the appearance of lines, the total lack of vertical deflection. In the latter case, only one horizontally arranged luminous bar is displayed on the screen.
The cause of all cases of failure can be malfunction vertical deflection generator block. The frequency sweep generator adjusts the set of electronic components. Therefore, to fix problems need to attract a person perfectly versed in design patterns.