Question about Televison & Video
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Posted on Jan 02, 2017
This is a problem with the process called 'tape loading' - pulling the tape loop out of the cassette and wrapping it around the spinning video drum, engaging the capstan and pinch roller and reel rotation. Check all the belts above and below the deck. Belts can appear to be firm but if they do not return immediately to their relaxed length when you stretch them 25%, they will need to be replaced. With the cover off, observe the behavior when you hit play. (You may need to put a piece of cardboard over the cassette to block external light from interfering with the start/end tape sensors). Assuming this is a basic VCR (no instant start features), you should see: 1. The video head drum begins to spin. 2. the roller guides move smoothly on the tracks, wind the tape around the drum, and stop snuggly pressed against the 'V-stopper' at the end of the tracks. 3. The pinch roller moves into position and presses the tape against the capstan. 4. The tape begins to move and is wound up by the takeup reel. 5. The picture and sound appear on the TV. With a 'rapid or quick start' (or it may be called something else) transport, the tape moves to a half-loaded position when the cassette is inserted. This is at an intermediate position partially pulled out of the cassette but not wrapped around the drum. On VCRs with a real-time counter and/or index search capabilities, the tape will be in contact with the control head. With an 'instant start' transport, the tape will fully load around the spinning drum when the cassette is inserted but the capstan will not engage and no tension will be applied to the tape until you press PLAY or REC. (After about 5 minutes, the drum will stop and it may unload to the half loaded or unloaded position.) Note that for VCRs with a real-time counter and/or index search capabilities, the tape must be in contact with the control head (but not the video heads) for all relevant modes. These VCRs (which include many modern units) must therefore pull the tape at least partly out of the cassette. In all cases, the completion of the sequence results in approximately the same mechanical configuration during PLAY. Several likely possibilities when it shuts down: 1. Everything occurs as above, picture and sound appear for a few seconds, but then the VCR unloads the tape, ejects the cassette, goes into REW mode, stops, or shuts off. Two common causes: The takeup reel does not turn and tape spills into the machine. This is sensed by the microcontroller which aborts record or play and attempts to save your valuable cassette. Most likely cause: old/dirty idler tire. As a test, turn the idler tire inside-out. The fresh surface will now work well enough to confirm this diagnosis and will continue working long enough for your replacement idler tire to arrive. See the section: "General guide to VCR cleaning and rubber parts replacement". The takeup reel is turning properly but
Posted on Nov 22, 2005
It may need to be cleaned. Mechanical problems are one of the big problems with VCRs they use alot of mechanical moving parts and play for so long they fail. Plastic parts dont help much either. The pinch roller takes up the slack and is usualy the part that fails first because it constantly runs along the tape and builds a coating on the rubber so it doesnt grip the tape and pull it back into the cassette. If its not pulling the tape back in then it hangs up inside and you cant get the tape out. Fastforward uses the reels to pull the tape not so much the roller. Try and stop 2 times then fast forward then eject the tape. Try and eject the tape while its fastforwarding so it doesnt do anything else. Sometimes machines will unload after its been in fastforwad a while then it will eject. You will hear a change in the sound when it unloads, you can hear the mechanical arms move the tape in and out of the cassette. Thats when you eject it. You cant really clean it till you get the tape out. YOu can clean the pinch roller with fingernail polish or paint remover. It is a wheel inside it looks like a black tire. It pinches the tape against the capstan arm this is why it developes a film or a shine on the rubber making it slip.
Posted on Apr 04, 2006
I thing that you are having problems with your gear assembly on the carriage. FF and RW use a series of gears to move the tape from one reel to the other. If possible could you take some pictures of the gear assembly. More then likely the gears are not making contact or the drive belt has slipped. Granted this is just conjecture until I can see those pictures of the assembly. firstname.lastname@example.org
Posted on Sep 10, 2007
Yes, that is a possibility. Also check the mechanism which activates the brakes- is something sticking or broken? A dried or sticky grease can cause the brake mech. to hang up. A broken or cracked lever or slide piece could be your problem too. Late VCRs of the last 10+ years are rather breakable, unlike the older ones which were often built like tanks, comparatively speaking.
Posted on Sep 26, 2007
The beeping indicates that an error has occurred and that the unit has been disabled because operation could damage the unit further. To determine what the problem is- Turn unit off. While holding the STOP button, turn back on and continue to hold the button for 8 sec, then let go. Press display and you will get an error code on the monitor, for instance, C:21:00 error code (the most common code I get) indicates a condensation problem. If this is the code you get then leave the unit open in a dry place for 24 hours or so, and it should dry out the dew sensor and clear the code. The unit will hold up to 6 error codes in the order that they occur, rotate the wheel to cycle through the codes. Codes are displayed as - C:XX:XX. If you get a code other than C:21:00, then google the code,(Sony C:XX:XX) and the description will probably come up. Good luck.
Posted on Oct 19, 2009
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