|
||||||||
Panasonic NV-F55 - *very* wierd fault! |
![]() |
|
|
Thread Tools | Search this Thread |
|
|
#1 |
|
Forum Member
Join Date: Apr 2010
Posts: 5,045
|
Panasonic NV-F55 - *very* wierd fault!
Hi all. This machine has recently started a "cycle" of actions when it is switched on.
This cycle consists of: the feed spool rolls anticlockwise then stops as the idler moves right (as it would, obviously). the cassette tray, while at "half-load" moves towards the cassette door The idler moving right The idler moving left the cassette tray moving back to it's half-loading position The machine turning a few cogs between the idler and the pinch roller (I believe it to be a G deck). These cogs turn a bit, stop, a kind of grinding/rattling noise is heard, then it continues to turn before retracting to its starting position. The process just repeats itself ad nauseum. This process did happen with the head drum spinning at a very low speed, but the head drum does not spin during this process now (though it does still work - see below). The take-up reel doesn't move at all. The cassette tray, when even the smallest bit of force is applied to it, does not move. When it is forced towards the cassette door, the takeup spool spins fast and then the machine shuts down. Removing the ribbon cable going over the cassette tray just makes the machine make a rattling sound from underneath (like the grinding noise when repeating this cycle but at about half the speed.) After this , it stopped making the cycle, I inserted a tape, the cassette tray took the tape halfway down, the A/C head loading arm comes out and the pinch roller lowers, both scrunching the tape up. the machine shuts down. Switch it on again, and it lowers the cassette a little and the video head loading arms pull it around the drum, bit now the tape is much higher than it should be in the tape path (from it being lifted halfway down just moments previously). It shuts down. When switched on a third time, it unloads the cassette, makes a clicking noise for a few seconds and then switches off. I've checked all plug connections and looked for bulging caps (except in the power supply). Disconnecting the main board from the tape tray makes the machine believe there is a tape in there, load up and the head drum begins spinning at full speed. Connecting this back up and pressing the on/off switch makes the machine unload, but the two head drum arms retreat to their starting positions a little slower than normal. I'm not sure if it is a mechanical problem or an electronic one. The machine was stood for some months, maybe a couple of years unused, (it's due a belt and idler replacement soon), or if the fault is electronic, as this, to my limited experience, suggests more of a mode switch/electronic fault. Can anyone offer any help? |
|
|
|
|
Please sign in or register to remove this advertisement.
|
![]() |
|
All times are GMT. The time now is 17:20.

