Question about RCA D52W19 52" Rear Projection Television

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Mistubishi tv vertical hold not working

Hi, my husband and I tried to follow some previously posted advice pertaining to mistubishi tvs, vert hold and pip circut boards. We opened our tv only to discover... we don't even know where or what the pip circuit board looks like.

We don't care about the pip feature and simply would like to just remove the pip circuit board to solve the vert. hold problem. Our tv is model # cs-3115r. I'm afraid to clip the wrong brown wire. We are totally amature and just hope NOT to get electricuted when we plug it back in, thanks marnie

Posted by marnielee7 on

  • marnielee7 Apr 13, 2008

    Thankyou yankeegurl for your advice. What link are you talking about? I thought I was posting to the tecs? thanks marnie

    BTW, I noticed that I may have posted this under the wrong heading : RCA. I don't know how that happened. oh well

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Anonymous

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You can go to this link and one of thier tecs can help you out just leave them an e-mail with your model number and they kow how to do the bypass

Posted on Apr 12, 2008

  • Anonymous Apr 13, 2008

    the tecs at this sight speciallize in these tv's just go to the link I am posting click on the contact link on the left side leave an e-mail with you make and model number and explain what you need to do and they will get back to you, they are great at getting back to people quickly

    http://servicemanuals.vstore.ca/

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Our tv worked fine last night and now at first it was really dark and now it is flipping. What do I do?

The loss of brightness is probably caused by degraded high-voltage internal to the set. This can be caused by an electrical "brownout" that will correct itself.
The flipping problem is due to a degraded vertical synchronization signal. First make sure you have a strong signal - no loose antenna/cable connections, etc. Assuming you have a strong signal (i.e., no "snow"), analog TVs sometimes have a so-called "secondary control" (labelled "Vertical Hold", "VH", "Vert", etc.)located on the rear of the set. If you are lucky you may have one and be able to adjust it and regain stability.
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Video tapes played through VCR experience vertical 'rolling'

unfortunatly no. the vert hold is set by black bars at the top/bottom of the video signal (outside of the viewable area). it sounds like your VCR or tape is damaged.
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Intermittent vertical jitter on mistubishi tv 65000

Good Day, sdkhanmd; Replace C2P05 100 UFD 16 VOLT off pin 3 IC2P01 and IC2P01 part #270P466020 (9 volt regulator). Both are on the signal PCB. Also, check other caps in area for leakage. Hope this was helpful, this common for this model. Good Luck, big IRISH.
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Vertical adjustment

I got your previous post. normally, the adjustments are toward the back following the back side of the main board, if they are not there, then they are sprayed all around the main board itself. things to look for are:

vert.
vadj.

I'm looking for a service manual for your tv 27pt9015d. still not having any joy finding this manual. the problem you are experiencing is technically called "vertical fold over", if there is no adjustments, then it's circuit controlled and will probably need servicing.
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Vertical hold?

replaced this capacitors in vertical circuit.100 uf/50v,1uf/50v,1000 uf/25v,2.2uf/50v,47 uf/50v.this might not as exact as what is on ur tv.but, just replace those capacitors and see the result. hope this help u....
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Picture problems

you have a vert sweep colapse. Fisrt thing is to get a schematic diagram and find the vert. output Ic and the clamper diode. Measure the voltage on both sides. If its low then its apossibility that the Ic was drawing loads of current and blew out the b+ feed resistor. Look on the schematic and trace back the voltage line from the vert output ic back to the sweep power supply on the secondary of the flyback transformer. check the limiter resistor to the feed and if its open replace the cap right there the resistor as well as the vertical output Ic ALL AT ONCE!!! If you dont you will cause it to go out again in a short time. Good Luck.. If you post the vert part of the schematic I will be more then happy to assist you with this repair.
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Fixing horizontal line problem

If hitting the set gets the vert to come back then you have bad solder connections on the vert. outputs.. If it dosent then your gonna need to measure the voltage first on the vert output IC see if its about 24 or so volts If it is replace the IC. If its not the replace the vert B+ drive capacitor off the flyback xformer. If you cant find these things then your gonna need to get a schemtic from sams photo facts and post the vertical section and I will tell you or assist youin this repair. If you have had experience in soldering and curcuit work your already ahead in the repair. post the schematic.
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Vertical hold

You dont have enough vertical sweep!! Best thing to check is the vert output device and I think its an IC . BUT before that check the b+ going to that device and see if its low. I will run through a silicon diode right next to the ic. Measure both sides of the diode and if theres a big voltage drop then the diodes bad. Now also these sets are common for the b+ filter cap off thge flyback transformer. Its the voltage line that feeds that diode and the vert output section. Now measure all caps out of cucuit as most will measure good if you dont. Also just for giggles right nrxt to the big IC that has the vert ,horizontal video and sound drive there is if im not mistaking the vert parts start with c4-- or the ic will be ic4-- Its a small cap that will sayc4-- attached to nothing but the ground and one pin of the ic. I've seen this cap cause all sorts of vert problems in the past as its the vert waveshaper capacitor for the vert osc/drive. Good Luck
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