Question about Televison & Video

1 Answer

Philips PTV 915 mod 50p8341a, powers on, but no video or audio or osd, can raise Beam current and achieve a REd or G,B rater. HV and filaments glow and ok. when turned off pix appears and then off as per the commnand. Changed the daughter PCB on signal PCB, upright pcb on eft rear of ssb and same result. Not the Daughter PCB, generally this PCB will exibit a no power on problem. Question, is it the AKB or Kine bias votage or one of the CRT's, generally the BLUE

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points
    All-Star:

    An expert that got 10 achievements.
    MVP:

    An expert that got 5 achievements.
    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 3,422 Answers

Hi,

Loss of picture n sound can be from many things. In your case, since you heard a high pitch squeal, it is almost always related to a bad flyback transformer. They can develop intermittent conditions before they finally go.

Therefore, I am confident that you can get the flyback fixed by a local shop for under $100. At least, I suggest you call around, giving them your symptoms like you did here and get their opinion.

It is new enough that there should be no question about the value of getting it fixed.

All the best and let me know if you have further thoughts or comments for me.
Goodluck,
Dont forget to rate me as fixya..

Posted on Jan 28, 2008

Ad

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.
Good luck!

6ya.com

6ya - Get Instant Help

6ya.com

Need repair answers fast Use 6ya to...

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

1990 Nissan axxess my headlights only work on right sideonly on high beams I have power all the way to plug in on both sides meter shows both have power high and low beam checked bulbs no filiment bro
Not Grounding.Clean The Grounds.Ground Block Around Your Battery..

Oct 20, 2014 | Street Glow White Xenon Replacement...

1 Answer

Rca ptv p52937sg chas ptk195m4b need u18100 and u26901 part numbers
send a email request to customerservice@tvrepairworld.com they should be able to provide those items.

Jun 15, 2012 | RCA P52937 52" Rear Projection Television

1 Answer

My microwave will not heat model #mw8119sb
Hello there and welcome to fixya
Testing the magnetron WARNING: First, with power disconnected, discharge the high voltage capacitor. See the section Safe discharging of the high voltage capacitor.
  • A magnetron with an open filament will result in no heat but no other symptoms. The bad connection may be internal (in which case the magnetron will need to be replaced) or external at the filament terminals (which may be repairable).
  • A magnetron with with a short between the filament/cathode and anode will likely result in a loud hum from the HV transformer and/or magnetron when the cook cycle is initiated but the main fuse will probably not blow. However, note that the actual wattage drawn from the power line will probably be much lower than under normal conditions. Although there will be a high current flowing in the HV transformer secondary through the HV capacitor (likely causing a loud hum or buzz), the real power consumed will be reduced since the current and voltage will be out of phase (due to the series capacitor) and the power factor will be low. A reading on an AC line wattmeter of 300 W compared to the normal 1,200 to 1,500 W would be reasonable.
  • A magnetron with other faults may result in a variety of symptoms including erratic or low output power or intermittent operation. See the section: Comprehensive list of magnetron failure modes.
There is no totally definitive way to determine if a magnetron is good without actually powering it under operating conditions but the following tests will catch most problems:

  • Magnetron filament. The resistance should be infinite from the filament connections to the case and a fraction of an ohm between the filament terminals with the wiring disconnected from the magnetron. While measuring resistance from filament chassis, gently tap the magnetron to determine if there is an intermittent short. However, such problems may only show up once the filament heats up and parts expand.
    It may be possible to determine if the magnetron filament is actually working by connecting just the filament connections to a low voltage high current supply on a Variac (e.g., a microwave oven transformer but just the filament connections). Most ceramic insulators are translucent and should show a glow with a working filament. The one at the antenna may be visible if the magnetron is removed from the oven or with a dental mirror looking into the waveguide. WARNING: Make sure you ONLY have the filament connected!
    I tried powering the filaments of a few magnetrons. On those that had white or pink ceramic insulators between the antenna cap and body of the magnetron, the glow was very bright. Even on one with a dark red insulator, the glow could be seen with the lights out.

  • Evidence of arcing (visible blackening around ventilation holes in base or burnt odor) usually indicates a bad magnetron.
  • Melting or other damage to the antenna cover ('bull-nose' or 'bullet') may be the result of arcing due to problems in the oven cavity or waveguide (perhaps operating with nothing in the oven) or a defective magnetron. (This part is only visible with the magnetron removed from the oven). If a problem elsewhere has been corrected, the damaged antenna cover can be pulled off and replaced from a magnetron that died of other causes - try your local appliance repair shop. (The shape doesn't matter as long as it fits tightly - there are several diameters, however.) Your magnetron may still be good.
    Note: Since the antenna is attached directly to one of the vanes which is part of the anode assembly, it will test as a dead short to the case on your multimeter using DC and is normal. At 2.45 GHz, this won't be the case! :)

Aug 17, 2011 | Emerson Microwave Ovens

1 Answer

Philips 43p8341/37, ptv 914 chassis, led code blinks
Let's check and see if we can find the correct board with the problem. A good place to start is to disconnect the jumper jack 1516 [TV unplugged first]. Now plug in the TV, and power the TV on. If the tubes light up and shut down...then the small signal module is at fault. {this contains convergence ICs} Or it could possibly be the ssb [small signal board] is bad. Leave the set unplugged for a few days and plug in and power up this TV..It may work for a few seconds and go down again. These are two good places to start before you pull the boards out...and they are not easy!

Jan 23, 2010 | Televison & Video

1 Answer

Philips 50p8341a no pic no sound except for chirping.
bad lamp

Jun 08, 2009 | Philips 51PW9363 51" Rear Projection...

2 Answers

No picture/ power button flashes twice constantly. 2 flash code?
Sorry, but there is no simple answer to your problem.
Bottom line, it needs to be repaired by a qualified technician.
The blinking is a code for what circuit area of the set called for the shutdown.
No matter what it is, there is nothing more you can do.

www.mcveyelectronics.com

May 03, 2009 | Philips 50P8341 50" Rear Projection...

1 Answer

DPTV335
Ed did you change the yokes when you put the DPTV series CRT into the PTV chassis? If not its most likely the vertical output or the Horizontal output that got destroyed. If you changed the yoke its most likely the HV generator.
On the DPTV chassis that should shutdown the vertical deflection which would leave audio working worse case scenario would also be the HV generator and Horizontal output.

Oct 20, 2008 | Philips 60PP9202 60" Rear Projection...

2 Answers

Rca projection tv has sound,no picture or OSD
The 169 is an old chasis but a good one. Many chronc problems can cause these symtons. No high voltage because of bad flyback, or HV spitter defec is the most likely, but there are chonic caps that fail in the power supply as well. This problem will most likely need the assistance of a qualified service professional.

Feb 10, 2008 | Televison & Video

2 Answers

Philips model 50p8341a projection
color is off. Faces are orange sometimes, all orange, or red? Tried the remote to fix however did not work.

Nov 22, 2007 | Philips 60P8341 60" Rear Projection...

1 Answer

Philips 55PP9401 55 in Wont turn on no video no OSD
could be bad convergence ic's stk392-120 X 2

Nov 12, 2007 | Philips 55PP9401 55" Rear Projection...

Not finding what you are looking for?

View Most Popular

Televison & Video

Related Question

1990 Nissan axxess my headlights only work on right sideonly on high beams I have power all the way to plug in on both sides meter shows both have power high and low beam checked bulbs no filiment bro

  • Street Glow White Xenon Replacement HeadLight Bulbs Xenon White (Pair) H3 100W

Open Questions:

0 Answers

Bought a 48 inch Westinghouse Model dwm48f1y1-c Ref# 687463 Purchased 2016, Worked great for 16 months. now TV comes on, But blank screen. Tried Unplugging TV (while on) for 30 seconds then plug it back in, nothing. Bought a motherboard kit installed all three, still nothing. Any ideas how I can fix this?

Apr 24, 2018 | Westinghouse Televison & Video

0 Answers

my new veryfitpro modelgeaw0112BB will not record stepstaken...heartrate works.

Apr 24, 2018 | Televison & Video

0 Answers

Codes for signalex DVD control

Apr 24, 2018 | Televison & Video

0 Answers

add app to visio tv need to add direct tv app

Apr 24, 2018 | Televison & Video

Televison & Video Logo

Related Topics:

134 people viewed this question

Ask a Question

Usually answered in minutes!

Popular Questions

JVC AV-56WP74 56" Rear...

Televison & Video

Samsung DLP HL-P5663W 56" TV

Toshiba 36A50 36" TV

ASUS T2 P4P8T WO/CD/MDM FM...

Check Out the Latest HD Televisions Report
Check Out the Latest HD Televisions Report

View all Fixya Reports

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75178 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Cindy Wells

Level 3 Expert

5343 Answers

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

Answer questions

Manuals & User Guides

PDF Manual
Owg_en_solo.pdf. user-manual-Solo TV...

Bose Solo TV sound...

PDF Manual
Sc1912.pdf. user-manual-SC1512 - 15.6...

Supersonic SC1512 -...

PDF Manual
Tx-nr809_manual_e.pdf....

Onkyo RC-745M Remote...

Loading...