Question about Proscan PS56700 56" Rear Projection Television

1 Answer

ProScan PS56700 completely out of focus / blurry

Someone gave me this Proscan PS56700 rear projection TV and revealed to me about the blurry image problem. I was told it was a simple part to replace but he cannot find the info on the part. Manufactured April 1999. Chassis # PTK195FP/F3P. Symptom - the image is so blurry, the menu cannot be read. Sound is fine, color seems to be ok. Don't know if it happened over a period of time or instantaneously but I imagine the prior owner just turned it on one day and this is the way it looked. Any direction or help would be appreciated.

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  • TurboII Dec 05, 2007

    I have a PS56670 56" rear projection set mfg in 97. My screen has gone into a "fisheye" view after it warms up(about 20 min). Might be a similiar or same problem you are having.

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1 Answer

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  • Proscan Master
  • 27,197 Answers

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

Posted on May 08, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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MikeNJ1964
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SOURCE: Proscan not turning on

Actually, the set has the PTK188AC chassis. This is a very uncommon chassis. The most common reason for the set not starting in that chassis is a shorted high voltage splitter. That is the large black box inside the set that has 5 thick red wires in it. When the set is turned on, the computer senses the short in the high voltage circuits and immediately shuts the set back off. When the set is on, that box has dangerously high voltage in it so it should only be replaced by a qualified tech familiar with the high voltage splitters in RCA projection sets.

Posted on Aug 28, 2007

SOURCE: ProScan Projection TV PS60690 shuts off

replace the small 5G5A125V fuse in the back where the power cord connects the to chip

Posted on Sep 02, 2008

  • 1 Answer

SOURCE: Proscan Projection screen warped

Just had mine do this same thing today. Looks like its time for a flat screen. Sucks to spend the money though :(


Posted on Dec 22, 2009

  • 1 Answer

SOURCE: i have a older proscan rear projection.. 60

volume will not come up--i have set the volume limiter all the way up,but it is still low. is there a setting in the back where i can set it up?

Posted on Jul 28, 2010

SD Tech
  • 14553 Answers

SOURCE: cobwebs proscan ps56700 inside screen

It can be done from the front but from the rear is actually more easy and safe--removing front screen and frame entails some danger of damage to the screens.

I have over many years of outside/home service calls encountered this.

As a outside technician I want the quickest and safest way to do this.

With set unplugged simply remove rear cover:

Use a swiffer type duster to reach up and inside and gently get all the webs out(do not use force when against the inside of the screens) and if the handle is long enough you will be able to remove all of the webs.

Also when doing this you will see with cover off 3 large black lens at the top of the chassis above the circuit boards.

They are the light source for your picture--clean them with a lens cloth or a paper towel with Glass cleaner sprayed on it---Do not attempt to clean the mirror in the rear as it is a film material and is easily scratched.

If the lens were dusty/dirty and then cleaned the picture will be brighter and sharper looking----that should be done about one time a year.

If you have questions make a comment here on this page(make a comment button).

Posted on Apr 21, 2012

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Cobwebs proscan ps56700 inside screen


It can be done from the front but from the rear is actually more easy and safe--removing front screen and frame entails some danger of damage to the screens.

I have over many years of outside/home service calls encountered this.

As a outside technician I want the quickest and safest way to do this.

With set unplugged simply remove rear cover:

Use a swiffer type duster to reach up and inside and gently get all the webs out(do not use force when against the inside of the screens) and if the handle is long enough you will be able to remove all of the webs.

Also when doing this you will see with cover off 3 large black lens at the top of the chassis above the circuit boards.

They are the light source for your picture--clean them with a lens cloth or a paper towel with Glass cleaner sprayed on it---Do not attempt to clean the mirror in the rear as it is a film material and is easily scratched.

If the lens were dusty/dirty and then cleaned the picture will be brighter and sharper looking----that should be done about one time a year.

If you have questions make a comment here on this page(make a comment button).

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