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My Philips 42TA2800 TV has an intermittent fault on the on/off switch, do i need to replace the PCB board switch. When you press the button it can take up to 15 minutes for the TV to turn on, the ligh

I have checked the power supply to the TV which is fine

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Testing the BN96-00249A power supply in an Akai PDP4294

You can get the schematics for the bn96 00249a smps here in pdf format. http://www.wimtv.be/techniforum/files/ps42p3sx_ch._d58a.pdf

Posted on Aug 14, 2007

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SOURCE: Samsung TV won't turn on- trying to fix it. A challenging problem

I had the same problem. I live in NJ and called the local authorized "service provide" listed on the Samsung website. What a joke. Quoted $350 just to show up, never showed up. So I opened my own TV. Took off the plastic back (10 screws) took off the large metal RF shield (12-14 screws) and noticed a blown component. The markings on the component were KL15L and it is apparently an NTC Thermistor. Obviously it got fried and not knowing if there was other damage I decided to set out to replace the entire Power PCB Board Assembly and not the component. There were two part numbers on the assembled board (BN97-00457E & BN94-00622E). After searching online I also found a suitable replacement number for these (BN96-04896A). I found two places who claimed to have the part or have it on order (shopjimmy.com and vancebaldwin.com). After placing orders with both and having neither come through, I broadened my search and found out that the LNR409D was basically the same model as my LNR408D so I looked for its Power PCB Board Assembly part number which turned out to be BN41-00521B. Google search for that part number showed the item available on ebay. I bought it a week ago (ebay 260311519904) for $144 plus $12 shipping. I removed the bad board an hour ago (6 screws about 7 connectors) installed the new one, plugged in the connectors, replaced the covers, plugged in the TV... AND IT WORKS!
Suggestion: If your TV is out of warranty then open it up (what have you got to lose) and see if the problem is obvious and maybe something you can fix (replace) yourself. The parts, spare boards, etc. are out there if you look.

Posted on Nov 16, 2008

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SOURCE: HDTV backlight turn off after 10-15 minutes, with some t-shooting

I have read everything I can find on the net about this problem for Polaroid TLX 04240b TVs (most, like mine, bought from Wal-Mart on Black Friday after Thanksgiving). I thought I was on a hot lead when I changed a 220uF 450v capacitor, but I still had the same problem. I saw a short post from somewhere else on this Fixya web site (sometimes I can find it again and sometimes I have trouble locating it) that said someone flipped a tiny switch on their circuit board and the problem was gone. I did the same thing and my set has been working fine. They had said their set was on for over 8 hours two days in a row when they posted. The other night my daughter left our set on over night for 20 hours and the picture still was working great. If you look through the top of the set when the picture is on you can see some white light at several locations, when the screen goes blank the white lights go out and a red LED light can be seen. If you take off the plastic cover on the back (3 screws) and then take off the metal cover (3 screws) this red LED light is on the upper circuit board in the lower left corner. Just a little to the right of the LED light is a small switch block that has 4 tiny white switches. I turned my set off and took the bottom switch (#4 and had the letters BURN by it) to the right "ON" position, turned the set back on and, so far so good. PLEASE NOTE!!! I know almost nothing about how transistor circuits work. I have no idea what the switches do or what long term effect this might have on the set. The set was only good as a paper weight before so even if this only fixes the set for a short time it was at least worth a try for me. Does anyone know what those switches are supposed to be for????

Posted on Aug 13, 2009

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SOURCE: Philips LCD TV 37PF5520D/10. TV will not switch on.

philips has a problem with bad caps(swollen)in power supply-try shopjimmys.com enter model number-scroll down til you find power supply-order it simple to put in.if they do not have it write down part number then google it to find one--you also can change the bad caps yuorself if you are handy with a soldering iron

Posted on Sep 11, 2009

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SOURCE: p50hdtv10a y-sustain and pcb

I had this problem with a different brand plasma and it turned out to be cracked or missing solder on the power board lead to y sustain. I removed the power board, desoldered the connection, clean it up and then resoldered the connection. Everything works great now.

Posted on Sep 27, 2009

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Fuse and fet / eft of power supply fused no. W18NK80Z. this is not available. Philips lcd model no. 42TA2800.


Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Oct 24, 2015 | Philips Televison & Video

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RCA, CRT Projection TV, ITC222 chassis Faults - models D52W.., D40W.., D56W..,...


RCA, CRT Projection TV, ITC222 chassis Faults - models D52W.., D40W.., D56W.., D61W..
· Symptom: No Convergence, Picture is bowed and distorted, colors don’t align.
The Fuse for the convergence power supply has blown
You'll also notice that the convergence settings have disappeared from the on screen menu. The fuse likely blew because of a fault on the convergence board. If you've never done soldering or dismantled a TV before this is probably not the best place to start. The back cover needs to be removed and the fuse (see picture) identified, the deflection/power supply board needs to be unplugged (label or mark all connectors beforehand) and flipped over and the fuse checked/replaced. You need a soldering iron and solder ****** or solder wick and a multi-meter to check the fuse. If you want to tackle it yourself see attached image for reference or get a quote from a repair shop (approx $200-$300 Total) the convergence board may also need repair.



  • Symptom: Dead Set - TV Tries to Start or intermittent dead.

The set could be in shut down mode due to a fault detected in the power supply, vertical or horizontal deflection circuits.
The common problems with this chassis that will cause a dead set or intermittent dead set symptom are, bad power supply capacitors, bad flyback, bad HV cap in horizontal output circuit and cold solders (on opposite side of board) especially under the flyback area. To gain access to replace any of these parts the back cover needs to be removed and the deflection/power supply board needs to be unplugged (label or mark all connectors beforehand) and flipped over.
These are only the most common problems and it could be any number of other faults.
If you have electronic (TV) repair experience check the items mentioned (see picture), otherwise it's best to seek a qualified RCA tech for an estimate/service call.

· Symptom: Erratic operation of set – turns off by self, the volume or channel changes by self or on screen menu appears intermittently.

Switches on the front panel assembly (FPA) problem.
What happens with this model is the FPA switches (one or more) start to conduct just as if someone was pressing the buttons. This in effect locks up the system control or causes it to initiate erratic commands.
The way to determine if the FPA is bad is to remove it by unplugging from set. This requires front panel disassembly.
Note: The remote will still work with the FPA removed so the set can be tested.

Hope this helped, johnnydiode, Fixya.

bcbda82.jpg

on Dec 08, 2009 | Televison & Video

1 Answer

My tv wont turn on when i press the power button on the tv ?


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit.Contact any service technician.If you wish to get some details; check the site linked here.Surf the site with patience.Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

Aug 03, 2014 | Philips Televison & Video

1 Answer

MY 32" LCD PHILIPS KEEPS CLICKING AND SWITCHING ON AND OFF ON ITS OWN, ALSO THE REMOTE RANDOMLY STOPS WORKING


tomlyndlevjo, Possible failure of internal "switch-mode-power-supply" board in tv. Remote not bad or intermittant!!! SMPS board is detecting "fault condition" and goes into "shutdown mode" to try and "save itself" from catastrophic, nonrecoverable failure. e.g. sparks, smoke, fire!!! If warranty no longer valid option for you, then you or qualified electronics technician will need to investigate SMPS board to find cause as to why SMPS cycles in/out of "shutdown mode" 12fixlouie

Sep 13, 2010 | Philips 32PF7320A 32 in. LCD Television

1 Answer

Philips pfl6704d all the buttons on the tv turn the power off and on.volume ,menu,channel all of them.remote has no afect at all.


did u have service your tv? some times when set back the pcb board, it's not really in it's position n the switch of button is pressed

Sep 19, 2009 | Televison & Video

2 Answers

Magnavox LCD HDTV starts on its own since last few months and sometimes it changes channel on its own. This problem happens intermittently and really apprecaite fix for this. This TV is 15 months old.


it either needs new front switch panel or new signal module, turn the tv on and disconnect the front switch board if it quits doing things on it's own you need a new front switch panel, if it still does functions on it's own you need a new signal board.

Sep 08, 2009 | Philips Magnavox 15MF400T 15 in. LCD...

1 Answer

Sanyo tv wont stay on


The problem of your TV is the power switch, and best solution for this is replacement with a good one.
Warning: The next procedure must be done by an expert to avoid risk.
1.Open the the back cover of the TV and detached the board.
2.Try to see any broken solder or cut PCB lay-out on the board.
3.Get a continuity check to the switch.If the switch is defective replace it with a good one.

Jul 13, 2009 | Sanyo HT32744 32" TV

2 Answers

I am receving error messages E301 or E100


E100 - 001 and 002:

BD error has occurred.
• The laser unit has a fault.
• The BD PCB has a fault.
• The BD PCB has a fault.
• The laser driver PCB has a fault.

E301:
The scanning lamp intensity has a fault.
• The scanning lamp has a fault.
• The CCD PCB has a fault.
• The DC controller PCB has a fault.


Seems to that you have issues with dc controller pcb




Oct 04, 2008 | Canon imageRUNNER 3300 All-In-One Laser...

1 Answer

Philips TV Model 32DW6557/05 Screen Problem


hi it sounds like a capacitor in the verticle circuit located on the main board. it is near the verticle ic. the verticle ic also could be bad the cost is around 85 dollars for a tv shop to fix. sometime a cold joint could be found around vert ic. a soldering iron is required with solder.tap the side of tv if picture comes back it is just cold solder joint.

thanks Doctor video

Apr 25, 2008 | Televison & Video

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