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Re: TEAC MV-77 VCR
The service manual should have a procedure for aligning the gearing,
BUT a lot of times they don't. Almost always, you can figure it
out as they put little tiny arrows or marks molded into the gears
showing which teeth line up. This usually is done in in the eject
If you succeed here, you can regard yourself as "mechanically inclined".
Hope Ya Fix It.
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Are the tension arms up? if so, the unit needs looking at to determine the cause of the fault. These X series decks are not the easiest units to get corrected because of the many features and the servo tension system they employ. I have one on the bench now and have been doing Teac decks for over 40 years. I can help if you need a Technician and I can direct you to guys I know if you are no near Chicago.
These units are mechanically in need of a good cleaning and application of new grease in the slide plate mechanism. The Play idler that was in the last one i rebuilt was sent off to Terry'srubberrollers.com to have it get new rubber on it. There is certainly a lot of work to be done on these units but they can be made to work again. Personally though, I would just get a Teac A2300S or SX and use that as the overall maintenance and longevity will be better in the long run. I have serviced hundreds of them and I still do. The design of the Teac is not so much dependent on all kinds of mechanical parts as the Sony is. The last TC366 I worked on took about 4 to 5 hours to correct all it's problems. Then when you are done you still have a lever activated deck where the Teac is a solenoid deck with remote capability. I worked at both Sony factory Service and Teac Factory Service so I have had experience in each item.
The reel motor drive is independent of the head base actuator system. You may need a new belt for the cam system or possibly a gear depending on what they used in this transport. This is a job for a Technician. I have not worked on one of those recently but have done thousands of other Teac and other brand decks over 40 years.
PWR should just be indicating the unit has power (is turned on). Is it possible that the unit is PAL or SECAM and your TV is NTSC? (ie - different video standards because the TV is an AUSSSIE and the TV isn't)?
the heads in the vcr are shot.....the heads which allow the tape to move forward or backward have gears attached to the bottom of them...sounds like the gears or cog wheels have damaged teeth which would cause the vcr to lock up...replace the gears and it will work..of course, its less expensive to buy a newer model.......my opinion....
This needs a little bit of care but essentially you will need to unplug the power from the VCR then do the following: Remove the top cover Then with the front of the VCR facing you look to see if any of the tape is wound around a large metallic silver drum, that is tilted upward and is not flat, at the rear of the tape casing. If so then it means that it has wound around the drum and you will need to retrieve the tape to allow the eject mechanism to work. Do not touch the shiny polished part of the drum. To get the tape in usually means that you have to locate a plastic or metal cog wheel, usually on the right side of the VCR that you can turn with your finger. This makes the VCR motor move. Also there is one that works the tape eject mechanism. If you can find the one to wind in the tape before working on the one for the tape eject than you stand a chance of rescuing the tape, if not then it will get some damage. Don’t worry about turning the cog wheels with your finger as you can do very little harm to the VCR with no tools involved and no power on. Moving the cogs this way will only cause very small movements with the tape motor and eject so you will need to be a little patient and you will soon see what is happening. Once remove run a cleaning tape through the VCR before you use it again. With the limited space available her it is difficult to give you much more info.
Most Panasonic VCR use a mechanisms with a letter. For example the NV-HS900 uses a K Deck. What you need to do is type the model number into google and search for which deck it uses. Then with luck you might also find the instructions for setting the deck up correctly. I got the K-Deck one free.
the timing will be out of line, thats whats putting in shut-down mode. dis-engage the tape carriage from the running cogs and manually put it in eject mode, re-align the main cogs to their pointers. there should be one on the cogs and on the chassis to help you re-align then re-engage the carriage to its cog.