When you try to fast forward, or rewind, the stop button blinks quickly and the vcr unit powers down by itself. When you are in play mode, it works fine. I have replaced the capstan belt & motor, drive gear assembly, and the main mother board. So far I am still having the same problem. I also checked the alignment of the gears and they are right on the money. What can I do?
ref. Panasonic AG-720
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Check if the fast forward button is more inside than the rest of the buttons. May be its stuck in the ff position. After all they were just micro switches below the plastic buttons strip. The specific ff micro switch may be stuck, if I were you I would try some switch cleaning spray to loosen it. But be prepared that the control ic is busted.
I tried the above steps, but each time when restarting the DVD player, it said 'reset' and asked for the language to be selected again. Pressing the "Fast Forward Fast Rewind Fast Forward Up Down" sequence caused the player to lock up and require powering off at the wall.
I found on another web site that there are different initial sequences. Once I use the one for Region 2, it worked fine.
I found the instructions below on another web site, but it worked for me...
Make sure there is no disc in the player.
Turn on the player (you can use remote control or front panel, it doesn't matter)
Wait for "No Disc" message to appear on the TV screen.
Press the Repeat button on remote (plain, not A-B).
Press the correct sequence of buttons of remote according to the original region code of your player (it's on the sticker on the back panel of the player). FF = fast forward, FR = fast rewind.
Region 2 players: FF, FR, FF, UP, DOWN
Region 3 players: FF, PLAY, FR, UP, LEFT
Region 4 players: FR, PLAY, DOWN, DOWN, RIGHT
Region 5 players: FF, UP, DOWN, STOP, RIGHT
Region 6 players: LEFT, RIGHT, RIGHT, PLAY, LEFT
If you pressed the correct sequence, a small white number 0 will appear somewhere on the top right of the screen. The white number 0 of the same font and size as the "No Disc" message, so don't confuse with the red "not allowed" sign that would appear when you press a function that's not available.
Turn the player off and on again, then you can pop in a DVD of any region and watch immediately.
There should be a rewind button on the front of the main unit (usually indicated by either REW or 2 arrows pointing to the left), this should be next to the fast forward (again indicated by either F-FWD or 2 arrows pointing to the right) as well as PLAY and STOP - for the VCR. The only thing you would need the remote for is to set the clock and/or perform setup for the DVD player as well as timer recording. Try a universal remote which will make fast forward, play, stop, record (to VHS) and rewind easier.
There is a part that is called an idler wheel assembly that is critical for play, rewind, and fast forward, and may have stopped working. The second possibility is that the drive belt that runs the idler assembly has broken or come off.
Though not familiar with this model, VCRs of all sorts have an idler mechanism which drives the supply and takeup spindles. Either the idler is somehow defective and slipping, and, assuming this idler is belt driven, the belt may be slipping just enough to cause a no Rew/FFW condition.
If you had access to a test tape jig (a clear dummy tape, which allows a tech to view what is happening in the area normally obscured by the loaded tape), this might give a clue as to what is happening.
On alot of machines, a problem with Rew/FFW would also mean a tape takeup problem in standard play, result in tape spilling out inside the machine. Sensors would catch this condition and go into a error mode, as yours is doing.
One other thing which might be happening here, is the pinch roller not being disengaged from the capstan in the Rew/FFW modes. I think this is where I'd look first, and you can probably see if such is happening just by pulling the cover off the VCR. The pinch roller is just to the right of the rotating video head. In the play and forward/rev search modes it will press the tape up against the capstan (a rotating shaft). When in Rew/FFW, the pinch roller should be pulled back from the capstan, maybe 1/4 inch or so.
Whatever the case, repair will likely take someone tech savvy. Costs might not be economically justified, with the low-cost, disposable rigs sold in the last 10+ years.
Just bought a unit from a thrift store. Found same problem; FF & RW OK, but play engages then stops. Also noticed buzzing noise when power turned on. Opened unit, found broken capstan drive belt. FF & RW driven from different motor. Buzz was drive motor running freely with no load - when power is on, capstan is driven all the time for fast play/record start. Replaced with rubber band, and it works --- now looking for replacement belt.