Question about Philips 28PW9536 28" TV

2 Answers

28PW9527 Retrace lines (?)

I have a five year old 28PW9527 with horizontal lines showing against a dark background. They are a bit less than an inch apart and don't go quite to the edges of the screen. They are whitish in colour, perhaps with a slight green tint. I have read that I should adjust the screen voltage and screen high voltage output. However, without a manual I'm reluctant to start. Can anyone advise how I can get hold of a manual, or exactly where these adjustment controls are inside the set?
Thanks in advance for any help.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 476 Answers

These adjustment controls are on the HT transformer. (Large plastic block on one corner of the main board - looks similat to a distributor cap on a car.) They are usually a plastic pot with a cross in the end to fit a flat blade screw driver. (This is the large blocks Philips TVs usually have three adjustments on the transformer:

  • Voltage
  • Screen high voltage
  • Focus
If you can locate these controls on the transformer, make a slight adjustment to each in turn, noting where the control position is before adjustment, so you can put it back.
When you have found the right control it will go brighter or darker.

Before adjustment, set the TV brightness control to about mid way. Ideally the screen should have a completely black image to show up the scanlines.

Adjust the control until the scanlines disappear. Do not over-adjust or the screen will appear too dark.

TAKE GREAT CARE not to touch anything other than the control. HIGH VOLTAGES

Posted on Mar 28, 2008

Check + 180vcc in tube board

Posted on Apr 15, 2008

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

White horizontal lines on top of screen


Replace all the electrolytic capacitors in the vertical output section circuit. There will be 5 or 6 of them. Replace the at one time. The fault you see is technically called " vertical retrace lies".

Apr 28, 2012 | RCA 27F524T 27 inch TV

1 Answer

Our three year ol Samsung TV has dark horizontal lines across the top of bottom of the screen. It is getting worse


Welcome to fixYa!

When you see lines like these across your LCD, it indicates a problem with your monitor's electrolytic capacitors.A faulty filter capacitor in the power supply board (SMPS board) can cause horizontal lines across your monitor screen.Horizontal screen lines are one of the most visible problems I see in LCD monitors & TV's that are 3-7 years old. It can happen as much from heat, humidity & less-than-ideal operating conditions, as it can from fluctuating current supply or manufacturing defects.

The way to repair horizontal screen lines is by removing the capacitors from the printed circuit board (PCB) and testing them with a LCR meter.

If it shows zero, there's your confirmation that the specific capacitor needs to be replaced.

now if you can replace them your welcome but i wont suggest that , cause you may break it more....!

any ways do comment if it helped you in any manner!

Apr 30, 2011 | Samsung HL-R6168W 61" HDTV

1 Answer

Picture Problem


In that set its usually a bad picture tube. The lines you are seeing are called retrace lines. You can take it to a shop and they may be able to rejuvenate the tube

Mar 13, 2009 | Televison & Video

1 Answer

Further assistance needed


I just replied you and here once again...

Please pull front speaker grill and find focus block, fixed at corner having 6 control knobs on it.
Find Blue Screen control knob there.
Put your TV in AV mode to get dark screen and just press Display button on remote to have AV display.
Now slightly rotate control knobs counter clock wise until thin lines (retrace) disappear. Job is done and put back speaker grill, press display button again to disappear screen display.

Dec 13, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Horizontal white lines across top of TV screen


Vertical hold circuit is failing.

Check capicitor in vertical hold circuit. You should have solid knowledge of electronics repair before attemping repair. TV's can emmit harmful radiation, and produce voltages up to or in excess of 30kV.

Oct 07, 2008 | Televison & Video

3 Answers

Horizontal white lines across top of TV screen


Hi I had the same problem. Broken white lines across the top of the screen. This is called overscan. You need to go into the Setup menu, other settings. 16:9 overscan needs to be on. Hope this helps.It solved our problem.

Sep 15, 2008 | Panasonic CT-2006S 20" TV

1 Answer

Blue and red arched lines on screen when background dark


Sounds like you are describing retrace lines that could indicate that your CRTs or something in the drive circuits are bad.. Check the resistors on the CRT sockets to see if they are in tolerance. If they are try turning the red and blue screen adjustments down just a little this should take the lines away. You will however be needing service in the not to far future. Turning the screens down should help if the resistors check out. Let me know if you need anything further.

Jan 31, 2008 | Sony KP-48S35 48" Rear Projection...

1 Answer

Green lines on my Sony projection


Those are called retrace lines and they are the result of the blanking pulse not having the desired effect. This could denote a problem in the Horizontal section of the TV. In this case the green gun is not being turned off as it goes back to the left side of the screen.

Sep 20, 2007 | Sony KP-57WS500 57" Rear Projection...

2 Answers

Green horizontal lines


Hi, I have a Philips 29PT9009/12 TV. Recently I have begun to see horizontal green lines on my tv, when either watching a dvd or watch tv. This has gotten worse and now the green lines are more visible and the background is now turned a shaded green. Please help me. Thanks in advance

Apr 30, 2007 | Philips 28PW6506 28" TV

2 Answers

Red Horizontal Lines


they gona get worse to dead circuit, a small capacitor (problably in the neck board) is bothering you, get a tech now that he can see the problem, gonna be cheaper now....good luck ps some times the picture say to the tech was going on

Aug 05, 2006 | Sony KP-51HW40 51" Rear Projection...

Not finding what you are looking for?
Philips 28PW9536 28" TV Logo

155 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Televison & Video Experts

The Knight
The Knight

Level 3 Expert

71635 Answers

matt martin
matt martin

Level 3 Expert

1207 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

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

Answer questions

Manuals & User Guides

Loading...