Question about Televison & Video

2 Answers

Magnavox plasma tv model 42mf230A/37

I have a black screen on my tv but it the green light turns on when i plug it in. I have asked around and everyone wants like $600.00 to fix so I started talking to more people and they think it is the motherboard, what do you think and where can I get a motherboard for that?

Posted by on

  • 8 more comments 
  • Anonymous May 16, 2008

    I have the same problem one day my tv just would not turn on but the power turns on I get no sound or picture. I tried to unplug and plug back in and check the cable source and called magnavox and they did not help

  • Papabear0405 Jun 08, 2008

    I was watching tv when the tv went black I could hear the sound but no picture. Please tell me its no big thing and that it's not going to cost that much to repair.

  • bryanwilliam Jun 28, 2008

    I plug the TV in the little red light cones on push power button and the green light comes on but no picture no sound what do i do

  • twayneaz Jul 19, 2008

    My neighborhood bar has 8 of these screens, in about 2 years 3 of them have failed (turns on but no picture). 2 of them were catastophic failures, with evidence of a small fire having taken place on the high voltage row driver circuit boards and the flexible conductor going to the glass screen.

    These are total losses as it will be too expensive to replace the glass (if I could even get it) and all the damaged pcbs.

    The most recent failure happened 2 days ago, and it's still taken apart on my bench. Its failure is in a similar spot, although not nearly as bad, but still caused damage to the row driver pcb and damaged the power supply board upstream of it.

    This one may be fixable since I may be able to salvage parts from the other 2. Unfortunately I am suspecting these failures may be caused by a short in the array on the glass plasma screen itself. This causes major current to flow through these circuit boards, they get real hot and ultimately the driver IC will delaminate from its heatsink and then it lets its smoke out.

    I wouldn't recommend attempting repair on these plasma sets unless you really know what you are doing as there are high voltages present. (Va=70v, Vsc=-190v, Vs=200v, Ve=84v, Vset=195v) Between Vs and Vsc is nearly 400v of potential, that would hurt bad if you got into it.

    But if you want to see if yours failed in this way: With the back cover off (make sure its unplugged too), look along the left side of the screen where the 6 flexible conductors come from the glass screen. These conductors are connected to 2 circuit boards. These circuit boards each have 6 driver chips with heatsinks glued to the top of them. Inspect the glue around the chips looking for discoloration. Mine went from pale white/yellow to a brown color where the failures were. Also check to see if any of the heatsinks are loose (you shouldn't be able to twist the heatsinks at all) as that will be evidence of excessive heat or a blown up driver. There is an audio board covering 2 or 3 of the drivers so you may have to remove the 2 screws holding it in place and some aluminum tape to really see all of the driver ICs. If you find problems in this area, the set might not be worth fixing.

    After seeing how badly these things failed, I won't ever own a plasma tv, just to much risk of having an unrepairable boat anchor after the warranty expires.



    Ted



  • Anonymous Aug 30, 2008

    Can I buy a new boeard anywhere
    ?

  • jtodd2120 Oct 16, 2008

    jtodd2120@sc.rr.com



    I perchased a 42" Magnavox plasma TV on 9/3/06. I now have a blank screen with sound . Model # 42mf230a

    I talked to the service representative at Phillips who owns Magnavox and was told there is nothing they can do.

  • Anonymous Nov 10, 2008

    I have the exactly the same TV and it is a black screen now with sound. Oh my gosh, this just happened too.



    Linda 209-529-9050 ext. 118.

  • Anonymous Mar 27, 2009

    audio no video

  • mrcyclist Apr 05, 2009

    My magnavox plasma failed last week. It has a black strip along the y axis where the picture is not displayed. The rest of the screen displays fine. Was wondering if I cound replace a board to fix the problem?

  • magnavx suks Apr 28, 2009

    can i use my 37" magnavox tv as a boat anchor

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I guess they are just built to fail. Mine was less than a year old, but they are sending me the exact same unit. Uggghhh

Posted on Aug 21, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a magnavox 42mf230a/32 I have not been able to find a board lj41-2760a I can sell yopu the mother board or any other part for this tv

Posted on Jul 14, 2015

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My magnavox model# 42mf230a/37 tv turns on I get good sound and picture but it has a 4inc black line onleft side edge of screen


Black lines on Plasma TV are cause by either the buffer boards or the logic board. OR your screen is bad. the only way to find out is the replace the boards. I would start with the Buffer boards. The buffer boards are located on the bottom of the screen attached by ribbon cables to the screen. look at the bar and replace the board that lines up with it. You can find parts fro this TV at www.interliquidparts.com You have to get the actual part number from the part on your TV to get the correct one.

Jun 13, 2011 | Televison & Video

1 Answer

Magnavox plasma tv model 42mf230a/37 sound but ni


Replace lower scan converter PCB, which plugged into Y-Sustainer Board, located to the left of the display if you poke back cover open. There are 2 of them, but in some models might be the one, long PCB.don't wait to fix it! otherwise, you will knock out Y-
Sustainer and upper scan converter. That will cause you to spend few hundreds to fix it.
Good luck,
Alex's TV Service,
Philadelphia,
Pa, 215-806-5980.

Jan 21, 2010 | SNK Magnavox 42MF231D 42 in. Plasma TV

1 Answer

42' plasma magnavox model # 42MF230A has no picture and no sound


I had the same problem with an Insignia 42" 1080p. Turn off the tv power and disconnect all cables (i started with power cable, then HD cables then HDMI). Wait 30 seconds with nothing plugged in, then I plugged everything back in (in reverse order) and it works fine.

Oct 04, 2009 | Philips Magnavox 42MF521D/37 Television

1 Answer

I have a magnavox 42mf230a/37 with black screen


more that likely your set got a serge and bleew a couple of capacitors in the power supply esay to find they will have dome on the tops from venting

Sep 17, 2009 | Televison & Video

1 Answer

Horizontal lines on screen


well if they run all the way up and are on every input through then menu the panel is NG, some panels are around $500 now.

Jul 26, 2009 | Samsung SP-R4232 42 in. Plasma HDTV

1 Answer

Magnavox 42MF230A/37 Plasma TV should i fix it? ?


you will need that part to repair yours. i recomend using the heatsinks from yours. u need to check the FETs on the board that drives that one before u power it up, or u could damage the new part.

Dec 05, 2008 | Philips Magnavox 42MF521D/37 Television

2 Answers

42 inch magnavox #42mf230a/37


One of the driver IC'S has gone bad. Need to replace just the driver IC or the board that the IC is on and that should solve your problem. If that doesn't do it, then the BAD NEWS IS THAT THE PANEL IS BAD. Replacement is you only option then. Good luck. GURU JAY.

Mar 16, 2008 | Televison & Video

1 Answer

I have a plasma tv need help


Sounds like panel is bad or driver ic is bad on the board directly below the black line. Good luck on the repair. Any questions, we can do a chat and go from there. GURU JAY

Mar 14, 2008 | Televison & Video

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

2,582 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

72670 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

yadayada
yadayada

Level 3 Expert

70387 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...