Question about Proscan PS56700 56" Rear Projection Television

1 Answer

TV Did Not Turn On After It Was Turned Off

I have a 1999 ProScan PS56700 56" rear projection TV that was working perfectly up until this morning. I last turned it off yesterday under normal conditions and today it would not power up. I have the back panel and casing of the TV off and have checked the fuse. The fuse is intact. When I unplug the set for several minutes and then plug it back in and push the power button on the front of the TV, I can hear a high pitched ringing in the TV as if is receiving power, but the front power on indicator light does not shine and there is no light being emmitted from any of the three light sources. The ringing will cease when I unplug the TV. There is a discoloration (rusty burnt appearance) on the Main Chassis Board in the grid intersect area of PP6 as defined by the electrical schematic. The exact location is looking at the board from the back of the TV is to the right of JW12100, to the bottom of CR13401, to the left of PB14120 and the to top of JW12164. It definitely appears like something was there and is now gone/burnt up. However, there is a rusty appearance to the area which leads me to believe that that area had the issue a few years back. Any thoughts on how to fix?

Posted by kchevaux on

  • DiamondDonn Apr 21, 2008

    Same problem ,How can I fix this..



1 Answer


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.


    An expert who has answered 200 questions.

  • Expert
  • 317 Answers

Call tech ..suggest checking horizontal components.

Posted on Nov 26, 2007


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I turned my tv on and the picture was green and purple. Had to adjust all of the colours to get a somewhat normal picture but it still isn't what it should be.

Turns out it was a problem with my HD satelite feed. Blueray worked perfectly. Turned tv on this morning everything back to normal.

Jan 25, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

How to replace power supply?

Toshiba model 57H93 worked perfectly last night. Turned off and went to bed. Turned on this morning, and nothing, it won't turn on. Checked all cords and cables, pushed reset button, and still won't turn on. What could cause this to happen?

Dec 14, 2009 | Toshiba 57H93 57" Rear Projection HDTV

1 Answer

Tv will not stay on Proscan PS52690

power supply probably needs to be rebuilt, vertical IC some filters,probably a couple of transistors. best to have an experienced tech do it for you.

Aug 30, 2009 | Proscan PS52690 52" Rear Projection...

1 Answer

52'' GE Projection TV will not turn on

Called a service technician. Found bad board and wanted $437.00 I bought a new TV

Nov 12, 2008 | GE D52GW12 52" Rear Projection HDTV-Ready...

1 Answer

Proscan PS56670 56" rear projection TV

For a 10 years old TV, it might not be worth fixing it. Save your money to get a new one once this one gives up.
I would keep it running using with the back cover off using that fan to keep it cool.
Hope this helps.

Apr 29, 2008 | Proscan PS56670 56" Rear Projection...

1 Answer

ProScan rear projection

Proscans are manufactured in conjunction with RCA what is the chassis number of your set? I can help you out if you can provide the chassis number. Should be located on the back cover of your set.

Mar 02, 2008 | RCA P61960 61" Rear Projection Television

1 Answer

Tv turns on and off 4 times but never starts.

Your problem is most likely in the main power supply or possibly in the sweep power supply. Without the know how and a service manual, you could turn a minor problem into a mojor headach.. LOL Play it safe and invest in a pro to assist you in this repair, as there are no user replaceable parts inside this TV set. Good Luck

Mar 19, 2007 | Proscan PS52800 52" Rear Projection...

1 Answer

ProScan PS56700 completely out of focus / blurry

I would replace the EHT unit as the focus voltage is supplied from there, if it has not been twiddled with by unskilled personnel.

May 08, 2017 | Proscan PS56700 56" Rear Projection...

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

155 people viewed this question

Ask a Question

Usually answered in minutes!

Top Proscan Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76390 Answers

matt martin
matt martin

Level 3 Expert

1258 Answers


Level 3 Expert

13434 Answers

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

Answer questions

Manuals & User Guides