20 Most Recent LG 37LC7D 37 in. LCD HDTV - Page 7 Questions & Answers


check the horizantal transiaster and momory IC

LG 37LC7D 37 in.... | Answered on Feb 28, 2011


Hi Divad,
Your problem is the main tuner board. You may visit the link below for the replacement.
http://shop.ebay.com/i.html?_nkw=LG+37LC7D&_sacat=0&_odkw=Pt-47WX53&_osacat=0&_trksid=p3286.c0.m270.l1313.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

LG 37LC7D 37 in.... | Answered on Feb 24, 2011


Hi,
Do you get auido-video lag in all input of tv like watching tv programs and playback of dvd player etc?
There is firmware update issued by LG and available on LG Support site that might help you to solve this problem (please follow instructions strictly written on that page to avoid any software damage) and if that does not fix your tv, please call LG Support on 1-800-243-0000 to ask latest firmware update for LG 20LS7D model.
Hope these info will help you.
Thanks.

LG 37LC7D 37 in.... | Answered on Feb 19, 2011


hi...yes there is a fuse found at the back. if you can dismantle the back cover and look for the power supply section..it's full of big/small capacitor , power mosfet, heatsink...in that area look for a cylindrical glass. the hair like wire visible inside it check if it split apart or if it already burn/ darkih color it's busted...don't you worry because its replaceable...replace only w/ same type and value...good day..pls. rate and vote...

LG 37LC7D 37 in.... | Answered on Feb 17, 2011


no some of the new> tv < they have 15 to 10 min. window power saver on them they built them like that so just incase of an elec. storm.

LG 37LC7D 37 in.... | Answered on Feb 07, 2011


It sounds like a problem in the high voltage circuit. Had a similar TV set which had the same problem. When there's power leaking from the high voltage circuit, these TV's will tend to cycle on and off. Voltage leaks are mostly caused by accumulated dust for the most part.

LG 37LC7D 37 in.... | Answered on Jan 31, 2011


try getting a new cable that connects the dvd player to the tv

LG 37LC7D 37 in.... | Answered on Jan 30, 2011


Please try this, look in the back of the TV and see if it has a small jack the size of a small MP3 headphone jack labeled with 'IR remote input', if it does, insert a mini phone plug in and out a couple times to clean the switch contacts that selct the front panel remote receiver or the external remote input.
If that still does not work then it can be the remote receiver in the front of the TV is bad.
Please post back what you find and also leave rating if it helps.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

LG 37LC7D 37 in.... | Answered on Jan 28, 2011


It can be caused by unstable DC in the power supply due to bad DC filter caps, that will be the first place to look. I have a feeling that it may be the main board.
http://www.shopjimmy.com/catalogsearch/result/?q=LG+37LC7D+

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.


LG 37LC7D 37 in.... | Answered on Jan 17, 2011


Hello
Dead and Stuck Pixels
Pixel defects for an LCD monitor are defined as one of two types: dead or stuck. Technically, both types of pixel defects are stuck pixels but it really deals with the electrical currents and the state of each pixel or sub-pixel.
A dead pixel is defined as a pixel or set of sub-pixels that has failed and is permanently in the off position. This condition means that the pixel will not let any light through. This can be observed as a dark or black spot on a brightly colored or white background.
A stuck pixel is defined as a pixel or sub-pixel that has failed and is permanently in the on position. This can be either with a single or multiple sub-pixels for a given pixel and is best observed on a dark or black background. A white pixel means all three sub-pixels have failed while a green, red or blue pixel means one of the sub-pixels has failed.
Hope this helps, if so do rate the solution

LG 37LC7D 37 in.... | Answered on Jan 16, 2011


The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol! If this helped (or not)please rate, thank you!dcefcd6.jpg

LG 37LC7D 37 in.... | Answered on Jan 08, 2011


the problem on ur tv is the power supply if u take the back cover off and look close to the power supply u would some bad capacitors , 3 to 6 bad cap or it can be only one thats way the tv is not working , if u try to replace this bad cap the cost woulbe about $50 with the solder station or u can call a tv repair shop and see how mush cost to replace the bad capacitor on ur power supply but u has to take the power supply from the tv and take it to the repair shop

LG 37LC7D 37 in.... | Answered on Jan 03, 2011


well depending how long its been together it has become seated together perhaps because after 4 screws are removed it should slide apart easily so try to lift it while holding base down

LG 37LC7D 37 in.... | Answered on Dec 17, 2010


either a couple of screws underneath or on the bacck side usually some arrows indicating the screws to be removed ok

LG 37LC7D 37 in.... | Answered on Dec 17, 2010


Hello sir, hi, most likely your TV power supply board has bad components already. You need a replacement PS board.

LG 37LC7D 37 in.... | Answered on Dec 14, 2010


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

LG 37LC7D 37 in.... | Answered on Dec 09, 2010


Tries it with other USB memory sticks?See,if it could be that memory stick have problems.Tries it with other HDMI hub?

LG 37LC7D 37 in.... | Answered on Dec 06, 2010


Hello.
Connect DVD player to your TV and make sure that there is no "slow motion" while using it. If everything seems to be OK - problem has nothing to do with TV. It is outside of it and could have something to do with your signal source (like cable box, etc).
If DVD have same issue - main board in your TV have to be replaced.
Regards.
Russ.

LG 37LC7D 37 in.... | Answered on Dec 01, 2010

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