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September 13, 2006 01:28 AM

Categories: Video Playback / Recording Devices

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yballester

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Joined: 09/13/2006

I have a Panasonic VCR Model #PV4351. When I press play, I can only see the picture for a split second and then the screen goes blue. If I press fast forward or rewind while it's in play, you can see the picture.  Any suggestions?

Discussion:    Add a Comment | Comments 1-6 of 6 | Latest Comment

September 13, 2006 8:54 AM

Your problem is bad back tension band or the alighnment of it, or the video heads are dirty or defective. Have you tryed a commercial video tape head cleaner? Most of the time, if its anything more then a head cleaning, it is not worth the money to repair it. Sorry to have to give you the bummer news. Let us know how you made out please! Good Luck

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

November 27, 2006 9:35 AM

clean video drum w/cofee filter and windex

November 27, 2006 10:05 AM

Windex??? Should NOT use windex my freind. use a head cleaning solvent or alcohol.

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

December 23, 2006 6:12 PM

Larry, forgive me for putting my two cents in: You are absolutely right in your suggestion to use alcohol; however, I must intervene with the admonition to use only 91% grade!  Anyone using a lesser grade takes the chance of causing future problems because of the water content.  Actually, alcohol is great for a number of things but nothing less than 91% should ever be employed.

December 23, 2006 6:26 PM

I would not suggest the use of a coffee filter as there is too great a chance for a fiber to et caught in the heads.  I typically use either a regular piece of paper or a buiseness card (the back).  I second the use of alcohol.

 What is happening:  The reason you get a blue screen is that there is no video signal being processed.  Panasonic machines usually default to the blue screen rather than snow which is what you get with other VCRs.  Pay attention to the last tape you played as that is the one that most likely contaminated the heads.  Let us know how you make out.

December 23, 2006 11:18 PM

Cleaning Video Tape Path and Heads You Will Need: Lint-free cloth (fine-weaved) Cleaning swabs Isopropyl alcohol (pure) Most video appliance stores can supply these products. Caution: Cleaning video heads isn't particularly complicated, but it should still be approached with caution. Don't start unless you're confident and only use cleaning materials which you know are appropriate for this job. Be very very careful about operating electrical equipment with internal parts exposed. Most jurisdictions have regulations about who is qualified to undertake live electrical work. Be legal and safe! Overview The main reason for needing to clean your heads is that the picture and/or sound quality has deteriorated. Although it's probably a good idea to clean your heads periodically, don't get too carried away. Most VCRs can go at least several years between cleans. If your picture or sound quality deteriorates suddenly, your heads may have become clogged with a piece of dirt. You may find that shuttling your tape or leaving it to play for a couple of hours may fix the problem. If not, you need to get under the hood. The actual cleaning process doesn't just involve the heads - you need to clean the entire tape path. This means every part of the VCR which comes into contact with the tape. An easy way to see this is to remove the top cover of the VCR and play a tape. You'll see the tape get pulled onto it's path with a system of rollers and guides. Eject the tape and disconnect the VCR before you begin cleaning. Cleaning the Tape Path (1) Soak a cloth in the isopropyl alcohol - enough to make it completely wet but not dripping. (2) Carefully wipe each part of the tape path - rollers, guides, pins, etc. Although these parts are not as sensitive as the heads, you still need to treat them nicely. (3) Wet a new cloth with isopropyl alcohol and gently wipe the audio and erase heads with a side-to-side motion. (4) Now the most delicate part - the video heads. The large round spinning part is the "drum assembly" and the heads are actually tiny components imbedded into the drum. It's very important that the cloth you use cannot get caught on the heads, which is why you must use fine-woven, lint-free cloth. Wet a cloth with isopropyl alcohol. Steady the drum with one hand and carefully begin rubbing the head drum in a side-to-side motion. Slowly rotate the drum and clean the entire circumference once or twice. Now see if your cloth is dirty. If so, repeat the process with a clean cloth until no more dirt is removed. Video Cleaning Cassettes A simpler option is to use a specialised cleaning cassette, in which you simply insert the casette and play it. Opinions vary about how safe and effective these are, but if you buy a reputable brand it's unlikely that the occasional use will damage your machine. However this method is not generally considered to be the best approach.  Forgive me guys for not going into a detailed explaination.  BTW I copied this from another site. 

"Those who do not know their opponent's arguments, do not completely understand their own".**For complete TV repair kits including parts goto www.TvRepairKits.com

Discussion:    Add a Comment | Back to Top | Comments 1-6 of 6 | Latest Comment

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