Question about RCA VR646HF VHS VCR
SOURCE: My VCR is playing too fast
try recording on a blank tape and setting the tape speed to SP (standard play). you should also see options for (LP-long play) and SLP (super long play). I think your machine is stuck on SLP option. if no-go, look for a manual on the web.
Posted on May 27, 2007
SOURCE: VCR eats tape when rewinding
A couple of possibilities: 1. Braking problems: When VCR goes from FFWD, REW, Play to stop, there are a pair of "brake pads" engaged to stop the reels, and prevent tape spillage out into the machine. These pads, often rubber like, are on levers which contact one side of each reel. If you take the cover off the VCR, and look down where the tape is loaded, you will like see these brake assemblies. If the rubber pad is missing, or lever pivot points gummied up, then this is your issue. 2. Take up reel isn't being engaged to take up the tape on tape eject. When a tape is loaded into the machine, tape is pulled from the cartridge and threaded into play ready position. When eject mode is engaged, the tape must be pulled back into the cartridge, or you will have tape hanging out the front end of the cartridge, and may get caught on the VCR internals, or at least be mangled by the cartridge door. The often issue here is likely the idler assembly pivot point is sticky. This idler pivots, moving from the take-up reel (right reel) to the supply reel reel (left one), depending on what mode is selected. FFWD & play to the right, left for REW. If this idler is gummed up at it's pivot point, movement will be sluggish at best, and might not be engaging the right reel quickly enough to pull tape in before tape eject. This idler is sitting right between the reels down where the tape sits. A little light oil on the pivot point may be enough to loosen it up. Otherwise it might need to be removed and the old grease removed, and a drop or two of light oil applied.
Posted on Jul 10, 2007
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
SOURCE: Video does not play
open the bottom cover see if this unit uses any belts The ones that would cause this problem if it uses belts would be the two smaller ones close to gether
Posted on Mar 31, 2006
ok sorry man gotta step in Its not the pinch roller as you claimed that picks up the slack on the tape its the pinch roller that would cause wow and flutter in audio on a tape on slower speeds what picks up tape slack is the takeup reel. Theres many reasons why the takeup reel dosent pick up the tape and there fore the unit "eats the tape" it could be a gear assy or even on older units could simply be the rubber drive wheel. Or a belt problem and I know these JVC s really well and its a combo the drive belt as well as the pickup gear assy.
Posted on Apr 04, 2006
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