Blown fuse in set

The set should be transported upright but that rarely causes these issues-----suspect either main signal board or also possible is the power supply (for voltages changing when set is on).

Also if set was opened look for all plugs to be seated--ones with cloth tape where they connect look at first.

failing that based on age of set consider having a technician look at it or if over 3 years consider a new set with extended warranty--70% of this type of set in our shop (100 plus sets at any time in for repair) are less than 3 years old.

I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.

That is an error code---either contact LG (brand listed here) or Google the model number with "14 blinks" "problems"

Here is a general answer:

I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have tobuy and try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.

Check the fuse on the Z-sustain module. The module all the way to the right (looking from the back) If blown (and before the set went out there was a loud pop) you need to change the IC on the Z-sustain part number STK 795-820 or 821 and the fuse. If you don't want to bother unsoldering and soldering back this part and you know the fuse is blown then replace the Z-sustain module. Do a google, ebay, or shopjimmy.com search with the model number for price and availibility.

good day hope I can be of help to you...is your TV "dead set" if so try these easy steps to trace the problem.. check the power cord for any burn or cut wires...check for a blown fuse... if you replace the fuse w/ same type and if it still been blown do not try to replace it again.. if this happen you have a defective power supply...let a certified technician now do the troubleshooting...good day...

Wiring....Circuits.....Old age..... Blown Fuse.... These are all reasons for a TV to stop turning on..... As to fixing it, you can buy new fuses and tech support could probably fix it for you....

2,2 means one of the pico fuses (see attached photo) that protects the convergence circuit is blown---This set uses 2 of the STK-394-250 convergence chips---you need to locate and replace the fuse and the chips---do not just replace fuse---it went for a reason, if just fuse replaced it will blow again and likely do other damage.


If this or the photo helped, rate this solution as very helpful as I do this here for free.

SD TECH

3 Blinks indicates that there is fault with the power supply of the set. Since the set is brand new, run back to the store and get a replacement. Also purchase the extended warranty(Think of the 250$ that you are gonna spend on this repair if the same thing happens right after your 1 year warranty expires?)

Hope this helps,
Sai.

it isnt a fuse, if your fuse was blown, it wouldnt even turn on, even for a second, it is your Y-SUS board, you can order one through there website, i think

Normally the sets have seperate power supplies for the input/main logic board and the HV which drives the panal (could be 2 parts on the same board). It sounds like you have a problem with the power board that drives the panal and HV. Check to see if any fuses are blown, if the fuse is blown, you can try replacing it, but if it continues to pop, then the main fets that drive the HV are shot and will need to be replaced.