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Video playback is only in B&W. Video "flickers" and varies in detail. Cleaned the heads and used a "head checker" to test for wear. Also, replaced 2 failing caps in power supply. Any idea on next step?

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  • mrpuhl May 22, 2011

    Don't know what happened to the beginnig of my question because it started out with: I have a panasonic VCR, model pv-s4566 that has a playback problem. (why that portion didn't get included, I don't know. Don't care as long as I can get some direction).

  • mrpuhl May 22, 2011

    Sorry, but the response is "lame". Did you read the second sentence that's posted? I am well aware of vcr functions (AS I had my own business) - hence I clean the heads with solution and chamios swabs first, use the "head checker" meter (have you ever used one, or know what it is)? to test for wear/abnormalities. After selling the business, I don't have the bench set- up/equipment I once had. At this point, I should have just put the $12.00 charge towards a schematic.

  • mrpuhl May 22, 2011

    Last comment! I HAVE worked with LEADER oscilliscopes. I am currently using a Fluke that can display wave forms. I also used the SENCORE VCR analyzer! The fact you don't know what a VCR head wear meter is shows how much you are "limiting" your self. You would not have qualified working in my shop. Good day!

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The signal coming from the heads is too weak. I'm assuming you have checked the signal cable coming from the drum to the board and its solderings. Since you have cleaned and checked the heads themselves it only leaves on thing - their circular connectors in the drum itself: either dirty or deformed.
Dismantle the drum head and clean it thoroughly.

Posted on May 23, 2011

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Hello
What is the model number of your device?. Without it how can I post a solution before you? Provide these by FixYa please.

Posted on May 22, 2011

  • The Knight
    The Knight May 22, 2011

    Hello - Your device is a four head one VCR. Out of which these four heads [head tips] tow of them will be used at regular playing, and the other twos are used for super still, still advance and so on. If the regular pay tips gets dirty, the fault you described will occur. Play a clean casette, I mean, a new one without any recording or fungus infection, for some tiem. This will clear up any dirt or fungus, at moderate thickness. It is best to play a head cleaning casette, if you have. If these does not helps you, one out of two tips [regular one] has a break with it, and the drum assembly as a whole should be replaced with same type. OK.

  • The Knight
    The Knight May 22, 2011

    Sir -- I haven't seen this type of testing equipents since 41 years of my regular service work. Have you seen a vectroscope? Have you seen an 8 channel Leader osilloscope? Have you seen the latest Fluke mutimeter that can display any waweform at field. I now owns an Authorised service center for Samsung and Philips at my motherland. OK. Good Bye.

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