Question about Sony VO-9800 VCR

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Head Hours What exactly are head hours and can i verify the number? (is the vo too old for that?)

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Re: Head Hours

I have replaced many an upper drum on u-matic VCRs. They were mainly used in Thompson flight simulation fair ground rides and were on all day every day. The original heads that come with Sony Professional and Broadcast kit last twice the recommended time before suggested replacement. HOWEVER, the replacement heads you obtain from Sony spares last shorter and must be made of a softer compound.

Posted on Sep 27, 2008

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Re: Head Hours

Nope it's in the user menu and you have to have video going into the deck to read it on the monitor video out put. Head hours are the time the tape actually is in contact with the drum and the most accutate easy indication of drum ware. 3/4 Umatics don't eat heads as a rule. I think I only replaced 1 out of hundred for thousands and thousands decks. Brokers love head or durm hours tipically it's T2 on the menu.

Posted on Jan 27, 2008

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Has the video got some kind of switch for switching between different audio sources? You might have to look on the menu to switch it back to normal.

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The video head is probably dirty, buy a blank VHS 120 tape, set speed to sp about 2 hours running time, and let the tape run. This works like a dry cleaning tape and is safe, repeat up to 3 times if required. I do not recommend wet tapes to ******* the video head.

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The company went out of business in 2007 , don't know if they are still for sale-- here's a link to it-

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1 Answer

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I assume this symptom appears when attempting to play a tape? If the picture is mostly snow, VCR may need video head cleaning. To do this, take the top cover off- You will note a cylindrical shiny aluminum drum- the actual heads are at the lower edge of this rotating drum.

Anyway, use a lint free cloth or special wipe moistened with rubbing alcohol, or product specifically made for such, carefully cleaning those heads as well as the drum itself. Occasionally, it may take 2 or 3 cleanings.

If the VCR has lots of hours, or abrasive head cleaners have been used, the head could be worn out. If so, toss the rig and purchase a new one. Head replacement is non-economical unless you have a high end machine.

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Sounds like the video head is dirty. Take the top cover off VCR, locate the video head, which is the rotating shiny aluminum cylindrical piece. At the lower edge of this drum are the actual heads. Use a lint free cloth moistened with rubbing alcohol or product specifically designed for such cleaning, and carefully wipe the heads and drum. Just hold cloth over a finger, and rotate the drum. Sometimes you will need to do this a couple of times.

If VCR has alot of hours or an abrasive cleaning tape has been used excessively, the head could be worn out and a candidate for the trash, unless it is a high dollar unit.

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This type of problem may be caused by a dirty video head, people some time try to adjust tracking to take care of this problem this is a mistake. Now to clear up this issue first you put the tracking control mid way in its setting, then you clean the heads of the VCR you can use a head cleaning tape (follow the instructions on the cleaning tape box)for this or if you have experience you use a chamois swab type cleaner (follow the instructions on the package of swabs and liquid cleaner). one the heads are cleaned you acn then try to adjust track to obtain the best picture. If you can not you may have video head problems or a problem in the drum motor (servo) mechanism. In which case I advise taking the unit to a TV repair shop.

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this sounds like the belts on the take-up pinch wheel if it's streached then it's going to be fast if you can find all belts that take tape to drum and read heads then check each one if streached replace if all fails when replaced belts then it needs repair. hope this works

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