Question about Projection Televisions

1 Answer

I have an LG tv model wt-32q82ip which i've replaced the flyback transformer on 6 months ago, now i have a new problem, the set has sound but no picture, or extremly dim picture. i have checked the G1 and G2 voltages on CRT and they are verly low, any ideas? thanks

Posted by on

  • contax Aug 14, 2008

    Dear libra_eng



    i have checked this already and found no difference to picture.

    just wondering if G1 and G2 voltages on CRT are direct from flyback?



    regards.

×

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
  • 1,011 Answers

Dear,
what about picture tube quality.
have you increased the brightness from outside and also from flyback.
check both conditions.

regards,

Posted on Aug 14, 2008

  • SALMAN NASEER Aug 14, 2008

    what about the quality of flyback that u have replaced.

    sometimes, it happens that the quality of flyback doesnt meet the requirement with the passage of time.

    what u say.

    may be it still causing by the flyback.

    moreover, try to discharge the picture tube then check flyback, if there is any noise coming from it ... or anything wrong with it.

    Becareful about high voltage in picturetube dear,



    regards,

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My sharp 32c540 picture is dark since i bought it brand new 6 years ago.


You may just have to make a different kind of adjustment.

This is what is called a direct view or crt type TV.

Inside on the main board (see attached photo) is the "flyback" transformer.

Note the two little controls embedded in it----top one is focus--leave it alone.

Lower one is SCREEN and a very slight upwards or right adjustment will bring the overall brightness up.

You want to adjust it just till with brightness on set all the way up you have a normal picture.

Too much and you get excessive brightness and trace lines and or further too much shuts set off.

Some sets have two holes in back of cabinet and small tool can get in and adjust the LOWER or screen control and others the back has to be removed.

Lay set face down on padded surface, remove back screws and set upright---do not touch anything inside with set on when you make the adjustment--control is plastic and a plastic tool a good idea--I have used regular screwdriver but know what not to do.

Let me know if you have questions 98% chance just need the Master Screen bumped up a little bit.

Mar 11, 2012 | Projection Televisions

1 Answer

Cannot Find Flyback Transformer 60PP9202/17F


Contact Philips directly. They should be able to get you the part, even if they have to get it from another repair shops. Many repair shops purchase their parts from factory authorized distributors, not from the manufacturer. The flyback transformer powers the tube-it can be extremely dangerous to work on-EVEN with the tv off, they contain a lot of power somethjing like 50,000 to 150,00 volts. It is not fun getting shocked by one of these as many techs have been knocked unconcious by them. If you do not know the proper procedure to discharge a flyback then leave it alone!

Dec 22, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Where can i get a flyback for a rca 52 projection tv m#p52937yx2? I read all day and it seems to be the fix? wont go on and has a clicking sound that persists untill you unplug it.


1.) RCA no longer sells this part--a company called ASTI makes a replacement for the RCA #250694---they call it #2086

2.) If you go to Ebay you will find seller "sewsales55" sells this replacement transformer for 19.95 plus shipping--type in search 250694 and you will see it--they sell lots of parts and give a 6 month warranty--fyi--If I was you I would check the HORZ output transistor--usually it is bad also---I have repaired dozens of these sets with this trouble-usually just the flyback transformer and the output transistor.

If you need help or have questions let me know.

I do this here for free so if this helps you take just a minute and give me a vote here.

SD TECH

Sep 09, 2009 | RCA P52937 52" Rear Projection Television

2 Answers

TV Just Started Making a Humming/Buzzing sound


Replacing a flyback is not something I would suggest for anyone with no electronics experience. Second, lets see where the noise is coming from first. Take off the back and listen to the noise. The flyback will be at one end of the large red wires that go to the tubes. Sometimes the connection at the tube is not 100% and the noise comes from there. BE CAREFUL - there are high voltages going through this red wire that can be dangerous even with the set UNPLUGGED!! IF the noise is coming from the connection at the tube, with the set unplugged, carefully turn the rubber cap back and forth touching only the rubber part with one hand. Put the other hand in you pocket while doing this.

If the noise comes from the flyback side, if you can solder, again with the set unplugged, try resoldering the pins on the transformers. That may resolve the problem.

Keep me posted.
Dan

Feb 13, 2009 | Samsung HCL5515W 55" Rear Projection...

1 Answer

Replacing the flyback


If your model is a HD52W59 the wires are part of the new transformer and have to be changed at the tripler and screen control block

Jan 21, 2009 | RCA HD52W59 HDTV Projection Television

1 Answer

Hi, I bought LG LCD TV 5-6 months ago and I have a problem with this TV now. When I switch it on is working fine for about 1 hour and screen get black. There is sound, but no picture. The model is LG...


If your fan motors have alot of bullted up dust in them set will quit playing correctly . Also most of the LGs need resoldering on power supply boards.

Nov 01, 2008 | Projection Televisions

1 Answer

TRANSFORMERS


you can get the parts at the following link and they provide free online instant messaging for free. or they can rebuild your entire deflection board for just a little more than what the parts cost and guarantee the board for 6 full months. Heres the link. you can leave them a email if you would like more info.
http://servicemanuals.vstore.ca/

Sep 06, 2008 | RCA HD52W59 HDTV Projection Television

3 Answers

Toshiba 42H82 RPTV: Sound but no picture


It sounds like the 200v supply to the crt's is missing. this is the source for driving the tubes, other than the high voltage generated by the flyback transformer. If the set got really bright gray with wome white lines that are kinda on a diagonal, this is generally the cause. the source for this voltage is a diode on the secondary of the flyback transformer.

Jul 11, 2007 | Toshiba 42H83 42" Rear Projection...

5 Answers

Chassis removal


all the projection tv are made with removal chassis in mind becouse thats the only parts you carry to the shop remove the upper ruber tap and gentely but firme pull the cable..be carefull tvs have verry dangerous sites, specialy in that area..good luck

Aug 05, 2006 | Mitsubishi WT-46807 46" Rear Projection...

Not finding what you are looking for?
Projection Televisions Logo

Related Topics:

90 people viewed this question

Ask a Question

Usually answered in minutes!

Top Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

yadayada
yadayada

Level 3 Expert

60792 Answers

Are you a Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...