Question about Philips 50P8341 50" Rear Projection Television

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Have power but no sound or picture

TV turns on and has a black screen with nosound or picture Powers on then whitish background appears for 2-3 sec. then it goes black. I can still hear sound, but no picture!

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Goto www.magnavoxhelp.com. They have a kit that will fix this common problem.

Posted on Jul 04, 2008

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I have an RCA projection TV, model D52W19B. The TV powers on ok, stays on, and audio is normal. I don't get a picture. If I press the menu button, the menu will appear on the screen normally.


my guess is you either have a satellite or cable box try unplugging the system cable or satellite and set for 5 minutes and then plug them back and and restart the unit up and see if it comes back the gemstar module would some times lock up causing this problem . and please let me know if that get's you working or if there is more trouble shooting to be done

Nov 03, 2014 | RCA Televison & Video

1 Answer

Tv takes to long to turn on and screen resizes


sounds like a power supply issue. partstore.com might have a power supply for this tv

Mar 18, 2010 | Sony KDS-R50XBR1 50" HDTV

2 Answers

MY problem with Sony KP-53S35 53 in. Rear Projection Television. When the TV powers on, the red light blinks until the picture comes on, then the red light blinks go off. I had to wait more than 5 minutes...


the number of flashes of the red indicator lamp points to the possible cause of the delay of the raster or picture, but usually it's an indicator of an emission unbalance between crt(picture tube) guns. the picture will take longer to show up as the emission on either of the picture tubes goes down.

Jul 27, 2009 | Sony KP-53S35 53" Rear Projection...

1 Answer

Samsung DLP tv w/ black picture will not power off.


If you are not able to bring up the TV's onscreen menu as well, it appears you have a problem with the TV's mainboard.  You didn't mention if the TV had any blinking error codes so if there aren't any lights flashing on the front, are there any on the sides or back to indicate the problem?  Not all TV's present error codes, but since the TV is maintaining power, it's worth a shot to look.  You could try a power drain:
1. Unplug the product's power cable so the device is not grounded to the house. 2. Press and HOLD the product's own power button for 1 minute to drain the capacitors. 3. Plug the product back into a wall outlet and try to turn it on.
Note: This procedure works with battery operated devices as well so remove the batteries and hold down it's power button.  Electricity can remain in capacitors and on circuit boards enough to prevent normal functionality. By clearing the residue electricity, your product will have a fresh start and many times this will resolve a buggy or non-responsive device that appears to be dead.
If this still doesn't resolve the issue, service would be required so you would want to contact Samsung regardless of your warrant standing for service options.

Mar 26, 2009 | Samsung 50" Slim-Depth DLP HDTV

2 Answers

Have power but no sound or picture


Do you have high voltage? Check by turning up one of the screen controls to see if you have retrace lines.(pinstripe diagonal lines across the screen) If present turn the screen control back down until the lines just disappear. Check diodes 6003, 6012, 6025, and resistor 3669. If you don`t get a retrace line by turning up the one of the screen controls, check for missing voltages or shorted components in the horizontal output and power supply circuits. Note: Philips TV`s can be tricky even for experienced technicians. Good luck

May 22, 2008 | Philips 50P8341 50" Rear Projection...

1 Answer

I have a bit a problem I would love to hear your advice on. I have a 37 LG LCD TV (37LC7D) and have owned it since about last Sept. This has been a great TV and I have had zero problems with it. I came...


1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try plugging in the TV through the USB on its panel to a computer or USB charger, and it may work. However, this is only a temporary solution.

3. Powering down the set or putting it in standby may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key. Also, just leave the TV on. Don't turn in off. Since it is LCD, it doesn't take much power...only a few bucks extra a month for your utility bill.

4. A circuit board may crack about some of the larger components mounted on it. You can inspect the PCB's for fractures, and then repair them. It may also be poor soldering that has failed. I would be checking for these things first.


5. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic:
5409f03.jpg
Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you, or get a qualified technician. Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.


REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.

Hope that helps...Should you have any further questions, please feel free to post them here.

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IrishDruid

May 01, 2008 | Televison & Video

1 Answer

Tv problems


Unplug the three red-blue-green plugs nest to the convergence amps. If the unit powers up and stays on the picture will look bad but will confirm that the convergence amps have failed...
Replacing the amps and one or more resistors in the yoke return will restore the set to normal operation..
Use only Sanyo original Ics..
Bill

Oct 11, 2007 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Mitsubishi 6043A Loss of color


Sounds like many different problems maybe related thou. You say 6043a but you are under WD-62327. So this info is for that.1. Suspect the Light Engine part # 939P977020 also you could need.. Suspect the Signal PCB part # 930B923002 if no video keeps up

Aug 27, 2007 | Mitsubishi WD-62327 62" Rear Projection...

1 Answer

Sony KP 53S65 53" rear projection TV contrast issue


While the root of the problem is likely the picture tubes aging, I'm sure it would benefit from a cleaning and adjusting. After the dust is cleaned from the lenses, the screen controls could likely be lowered to get the blacks you desire. An experienced tech would be able to do this for you.

Jan 03, 2007 | Sony KP-53S65 53" Rear Projection...

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