Question about Proscan PS56700 56" Rear Projection Television
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.
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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Posted on Jan 02, 2017
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
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
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.
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Posted on Apr 21, 2012
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