Question about Coby 40 TFTV4028 LCD TV

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Were do I find replacement power boards - Coby 40 TFTV4028 LCD TV

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  • Coby Master
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Shopjimmy.com has the for just under $70. They are also available on Ebay for about $55-$60. If you buy from Ebay, just make sure you choose a reputable seller with a reasonable return policy.

Posted on Oct 26, 2012

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Posted on Jan 02, 2017

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Samsung TV Makes Clicking Sound and Won't Turn On


Did you repair the power on power off switch I think that would be the only item needing replacing
I once had this same issue and went replacing the power supply board
Mine ended up only needing the power switch replaced so I got to return the board and put the old one in
Usually if you give the old board up when buying a new one a generous amount of money is taken off the new board price and this is done for any and all boards I have ever replaced in any item
I would try to see if you fixed the issue with your new board if not try the power switch that should fix the problem for less money

Oct 26, 2017 | Samsung Televison & Video

1 Answer

Samsung UN55FH6200 replace main & t-con board. screen black can barely see display word when power on. Saw burn mark near where power cord plugs in on Power Board. Can the Power Board cause this


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Dec 20, 2016 | Samsung UN55FH6200F 55" LED TV 1920x1080,...

1 Answer

No power and replaced the power board


What was the problem you ever faced, before replacing the power board? In the main board, there are test points, but normally no repair can be done with these board, other than replacement. If you wish to get some details, http://electronicshelponline.blogspot.com/ Pull up older posts.

Dec 14, 2013 | Sharp Aquos LC-60LE640U 60" Class LED...

1 Answer

Power indicator light blinks-7 times. will a new power supply fix it


Physically disconnect the SU board and the SD board. (See precaution # 5)

Plug in the TV and turn it on.

Does the TV shut down and the power LED

blink 7 times?

Yes

No

Replace the Panel and the SU board.

(See precaution #3)

Reconnect the SD board only.

(See precaution # 5)

Plug in the TV and turn it on.

Yes

No

With the SU board and the SD board still disconnected, remove connectors SC2 and SC20 from the SC board (See precaution # 6)

Plug in the TV and turn it on.

Disconnect the SD board and reconnect the SU board. (See precaution # 5)

Plug in the TV and turn it on.

Yes

No

Replace the Panel, SD, and SU board.

(See precaution #3)

Replace the Panel and the SD board.

(See precaution #3)

Replace the SC board.

(See precaution #3)

No

Replace the D board.

(See precaution #3)

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED
blink 7
There is a sequence that you have to check to figure out which board is bad,

Feb 16, 2011 | Panasonic TH-42PZ700U 42 in. Plasma...

1 Answer

My Samsung SP-R4232 has some type of power supply issue. I called a tech who came out and verified it. He thought it was the main power board, but wanted $400 to fix it when I found the part online for...


U replaced the tv power supply board,the board u replaced,that is the board where the power a/c cord plug into it?Check ur old power supply board,examines all parts,see if u have any capactors parts are bulging or puffing up on it tops.Yes,than it is power supply board issue.But by replacing the power supply board only get 50/50 chances for the tv to work.Might be the problems,might not be the power supply board issue alone some times.The chances are tv Tuner signal board is dead also.That the board,where the tv incomming broadcasting signal cable plug into it.Try website like Ebay.com to buy a refurbish tv Tuner signal board for the replacement.

Dec 04, 2010 | Samsung SP-R4232 42 in. Plasma HDTV

1 Answer

This one powers up, and displays for a second, but shots off after about a second.


U still have Sound?Or the power just dies?Tries websites Ebay.com,Shojimmy.com to buy the 2 reburbish LCD inverter boards,it a long boards,to replaced if still have sound.Replaced the 2 long LCD inverter board will get ur picture back.If power dies than buy the power supply board for the replacement.The power supply board is the board where the power a/c cord plug into it.

Jun 09, 2010 | Protron PLTV-3750 Television

2 Answers

Unable to either use the remote or the buttons on the player to operate the player. The light is red, replaced battery, and still will not function. Isn't the light supposed to change to green?


The power board inside the DVD is burned/ damaged.You need to take it to the service center to replace the power unit.

If you know what to do, you can open the DVD case, then replace the power board.To locate it, simply follow the power cord, power cord attached to the power board.
Replace with same type of boards.

Mar 07, 2010 | Cyberhome CH-DVD 300 DVD Player

1 Answer

Which Replacement Power Board for LNT4665F Samsung LCD TV?


Howdy,
It would be a lot cheaper if you just replace the two caps that have gone bad. Just get a cheap solder pencil from the store and about an inch of solder and you are in business.
The Power Supply Board is the center Board (towards left) after you remove the back off the TV. Remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.

Thaks for using FIXYA, BIG IRISH.

Dec 30, 2009 | Samsung LN-T4665F 46 in. LCD Television

2 Answers

I have an Intel D865GBF motherboard in my PC, which stopped working. I replaced the power supply because there was no power to the board. Now I have power, but when I hit the power button nothing happens.


The exact same thing happened to my D815EAA2. In my case an overheating power supply destroyed the board. Do the following:

1. Check the power supply you replaced it with works on another system.
2. If it still doesn't work with your board, the board will need to be replaced.

Nov 20, 2009 | Intel D865GBF Motherboard

1 Answer

I have a z20lcd1 tv and it has no picture


in the lcd tv there are three main parts
1)the inverter board(pannel)
2)the main board .
3)the power supply board.
----------
if there is no power at all them main board is faulty.if no front led light is coming ON there is no power .so the main board is not faulty.on the main board there is a fuse located you have to replace that and check first if still no power main board needs to be checked and replaced
---------------
if there is sound but no picture and front led light is blinking then its inverter board panel problem.if this is your case replace inverter panel.its located in the lower side of the lcd in the inner area below the main board.
-----------
but if there is just front led light blinking , but no picture or sound then its power supply board problem.
------------
on power supply board there are some capacitors and ic located.if any of the component gets short or budged up then it short the power supply board.so you can check the components on power supply board with multimeter and get it replaced by using soldering iron.
----------
also you can get new replaCEment power supply board.this clears the problem completely.
---------
you can get the required board and components at ----- www.partstore.com -------- or from ------ www.radioshack.com ----
---------
if you are not familiar with doing this you can get it done by local tv repair technician familiar with this model tv.

Nov 03, 2009 | Zenith Z19LCD3 TV

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