Question about Sony SLV-N750 VHS/S-VHS playback VCR

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Vcr jams on eject

All operations such as tape movement -play-rewind-fast forwrd work 0k. When eject hit,tape crunches and james. Looking at the operation with the cover off, I don't see how the tape can be lifted free of the rollers to eject Before I retired from IBM I repaired large system computers, but this simple operatiom operation stumps me. I'm sure I'm missing something--getting dumber,with age. Thanks for any suggestions.

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  • john mac whirter Mar 18, 2007

    yes it does load properly and the tape no longer crunches . Now, although the tape moves properly when play is hit no information seems to be read or displayed in the view portion of the screen. Other tapes with information on them do the same thing--nothing seems to be reading

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What do you mean 'Tape crunches" Do you mean that there is tape slack, which then crunches when Tape is lifted during Eject? If that is the case, then the Supply Reel Roller Brake is bad. it is a Felt Pad, which needs replacing. If the entire eject operation is wonky, or if it's timing is bad, then I suspect that One of the eject Gears (On either side of the Mechanism) is damaged and needs to be replaced. One question, i assume that you are able to eject the Tape eventually, and so - Does the Tape Load into the VCR properly, when you insert it into the machine? This will help me in giving you a better diagnosis.

Posted on Mar 14, 2007

  • Pravin Gupta Mar 21, 2007

    Dear Jmack,

    Waht do you mean "yes it does load properly and the tape no longer crunches " ? does it mean that your initial problem is solved now? If you say that now the tape moves properly, Shall i assume that the mechanical problems are now sorted out? And as for no information being read, have tried cleaning the Video heads? Use a Wet Type Video head cleaning cassette. Let me know if things have become ok now.

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2. There is a small tire wheel called an idler tire. This tire pivots between the sending and pickup reels of the player. Its also used during fast forward & rewind as well as play. If the tire is worn, the tape won't be wound up as fast on the take-up reel as the sending reel during play. This means more tape is coming out of the cassette than can be wound up on the takeup reel. You can try using a re-grip solution on the idler tire or replace it.

3. There's also a brake pad that is designed to grab and stop the tape wheels from spinning when you hit stop. If those pads are worn, the wheels will not stop fast enough and the tape will continue to feed (spool) out of the cassette and not be taken up by the other wheel.

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1. There is a rubber wheel called a "pincher wheel" that compresses the tape against the "capstan". The capstan is a shiny metal spindle connected to a motor. The pincher wheel can become worn and/or dirty (slick) from the oxide coating off of the tape. You can try cleaning the pincher wheel and capstan with alcohol or try using a re-grip solution on the pincher wheel. Last thing to do is replace the pincher wheel. Look to see that the pincher wheel is doing its job by pulling the tape through. The pincher wheel & capstan are not used during a fast forward or fast rewind, so if your tape is getting caught during the FF or RW and not Play, it's probably not related to capstan & pincher wheel.

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3. You didn't say if the unit played ok. There's also a brake pad that is designed to grab and stop the tape wheels from spinning when you hit stop. If those pads are worn, the wheels will not stop fast enough and the tape will continue to feed (spool) out of the cassette and not be taken up by the other wheel.

So when when you hit eject, the excess tape that should have been wound up tight in the cassette before the eject sequence, is getting caught inside the player.

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