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Panasonic TV/DVD/VCR Combination

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PostPosted: Mon May 08, 2006 7:55 pm    Post subject: Panasonic TV/DVD/VCR Combination Reply with quote

I have a problem with my Panasonic TV/DVD/VCR Combination TV
> Model PV-DM2792.
>I can watch the DVD and the VCR without any problems. Picture and
>sound are good.
>When I try to watch the regular Cable TV channels I can only hear the sound and there is no picture. I have called Panasonic customer service twice. I have reset and tried many different things to get a picture. No Luck. I have connected another TV to the cable and it work great. I can also see and do all the on screen setups without any problems.
>I have called a repair shop and was told to buy a new TV.
>I am also trying to find a schematic for my TV to see if I can figure
>out which circuit board may need to be replaced
>Can you give me any assistance.
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PostPosted: Sat May 13, 2006 2:23 am    Post subject: your tv combo problem Reply with quote

I believe it is one of the transistors or the inline power/ horizontal circuit components. Something in the power circuit is not allowing the transfer of power to the DVD or VCR. Test the High voltage transistor and the inline IC (usually 6-10 legs and attached to a heat sink upright- silver), The IC is black and is inline with the High Voltage Transistor. If that does not work try to see if their is a switching device of some kind leading to the DVD or VHS that is malfunctioning. Feel free to contact me if you want any other ideas, I am a bench tech with 18 or so years experience with everything from video games to gaming machines in Nevada casinos. Best of luck, be careful with the High voltage circuit........

Anthony ([email protected]) Shocked Idea
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Joined: 18 Nov 2005
Posts: 98
Location: U.K

PostPosted: Mon May 15, 2006 4:51 am    Post subject: Panasonic TV/DVD/VCR Combination Reply with quote

As this is a combi and the DVD and VCR are playing back alright and on screen display is present on this t.v then basically the t.v is operational but does not operate with cable.
Unfortunately I am unfamiliar with the model or cable.
How is cable connected? If connected via R.F cable then Does this combi have a twin tuner for recording a programme while watching another?
If so have you tried watching programmes through the vcr tuner rather than the t.v tuner as I suspect the t.v tuner may not be set up correctly. If it was working alright before and set up can not be performed the tuner may have a fault or the supply to it may be missing.
If not via R.F then is cable connected using a scart/euro/phono connector?
If it has both then have you tried connecting with the other? providing the cable box is capable of supplying a composite video signal output also.
If in doubt pull the plug out.
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