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What parts should be replaced...

kruega - 2008-11-24 09:58

Hey guys,

I am about to pull some boxes apart that all have some sort of deck issue.
I want them in primo condition, what parts are best to replace when you allready are doing a big job?
Say all the parts could be ordered.
I am a bit confused about the different rollers and belts.
Would it be like:
play idler
ff/rew roller
playback belt
counter belt
pinchroller assembly

These are the names in the catalogue I´m ordering from....cant see the capstan anywhere or would that be part of the pinchroller assy??
Anything I´m missing or got wrong?

Help would be appreciated!

Later

bredgeo - 2008-11-24 10:19

quote:
....cant see the capstan anywhere or would that be part of the pinchroller assy??


Sound about right!

So, yeah.... Just change all the things that look black... Big Grin... All of them! Wink

kruega - 2008-11-24 10:46

som more ???:
The pinchroller is the one under the capstan right, is it the playidler that runs the capstan or am I wrong??
The ff/rew roller and playider arn´t visible when just peeping in the casette door?
Also should I add idler spring to my list of parts or are they usually ok, they are like $3.50.
I don´t know what I need since the boxes are still intact but I need to order for the one I´m working on and the rest will soon be cracked open...

Thanks dudes!

bredgeo - 2008-11-24 10:59

Well...... The more you wanna replace the more "eventual" problems you will have... But once all is replaced and the parts are "original" or "Perfect" replacement parts, you should be okay!

Springs or anything can be changed...... if you find the right replacements, just make sure you TAKE PICS not to say, "****!!!! Where does this go???????? Confused Frown"... so you can have a look at the pics and say, "Ahhhh1 Yes! Smile "

Pinch roller IS the one you are thinking of... Wink

Later

kruega - 2008-11-24 12:05

thanks for your replys bredgeo!
The parts I am ordering are originals..

I am still confused about what the ff/rew roller and playidler do though...
Could you say that if it eats tapes it would be a capstan/pinchroller problem and if it doesnt ff/rew it would be the ff/rew idler?
Is the playidler the same thing as the pinchroller?

Could someone please explain this to me cuz I´m lost Confused

thanks again

bredgeo - 2008-11-24 12:22

You need to practice on some old Bbox you do not care for (and no one else here for that matter Big Grin Wink0

If it is eating tapes it is the pick up real that is not turning fast enough/or not at all/ (the pick up real is the same one that does the FF) the roller or belt -depending on the models/makes etc... of the pick up real is needing a change. It is less likely that it is the pinch roller... that just pinches and rolls and does not care if the pick up real is not turning thus eating up the tapes....

You get it?

kruega - 2008-11-24 12:47

Hey bredgeo
thanks for answering my noob questions!

pick up real, is it the actual drive that goes through the holes in the cassette?
Does it also do rew?
What are the symptoms of a defect pinch roller then?

I don´t have problems taking stuff apart and replacing parts if I just know what to replace!
If I know the names of the parts I need to order I can most likely get them in place...
I have ripped a vz3000 and a gf9494 to pieces and got them working successfully.

thanks

success - 2008-11-24 14:45

In my case .. when I took a apart a deck, first of all new belts. I've never get a box with fresh belts.
Counter belt is not important, except that the stop sensor is located in the counter (if yes, a little board would be seen atached to the counter or near). That's because counter belt not need to be perfect, since it does a little force. Also, putting a new one may lead some problems. Don't forget that it's attached to the tape transport directly.

I change pinch roller ONLY if I need. That's because in many cases the original, altough its older .. could be better than a new part.
Things that makes you think to change the pinch are tone variations (at a low speed), that cannot be defeated even correcting the azimuth.
Tape eating is the order main reason.

Play idler could be important, but for me the most important is the play take-up friction pad.
If it's stuck, the idler will become damaged fast and speed variations are excpeted The take-up force MUST NOT affect pinch roller speed regulation, that is: if the take-up do much force and pinch roller isn't perfect, speed will be goberned by the take up, shielding speed variations, because the take up speed isn't regulated.
So a new friction pad and good adjust is for me one of the most important issues.

Then, have a look to the motor, another important part. If the speed is stable and can be adjusted, you can keep it. But if speed changes, moreover after some time of continuos use .. think in change it. New aviable from mabuchi are excelent.

FWD and RWD idlers are not an issue, and are difficult to find. Usually the will work fine after a litle clean job.

Capstan cleaning, as well as polley and other elements in the way to the belts is very important.
Be sure to lube a little the capstan (in the bearing with some fine oil.

Additionally I like to wash teeth wheels with a little amount of alcohol and a toothbrush.
If needed, add grease at the end (some wheel dont take grease)

Have fun reparing !!!!

transwave5000 - 2008-11-24 19:06

You could do a 'blind' replacement of parts but you should be able to see what really needs replacement.

Ckeck the tape head, see if it is worn down. Also the take-up friction pad should be checked.

There are ways to get them working like-new using minimal replacement parts.
It can get expencive replacing parts and some parts are not available too.

Belts and tape heads are someting that cannot be fixed and only replaced.

bredgeo - 2008-11-24 21:59

quote:
I have ripped a vz3000 and a gf9494 to pieces and got them working successfully.


Oh good! Good, good, good!

Yeah, the pick up reel is the one that does FF (not REW) which goes through the tape, yes!

The "Bad" pinch roller symptoms is mainly when the tape is thrown from left to right because the pinch roller is no longer flat but "Bumpy" rounded off on its surface.... OR it has become pure gue!!!! Chewing gum!

Later

kruega - 2008-11-25 01:20

Thanks alot everyone!!
Some real good answers that cleared alot of questions for me Smile
Guess I´ll start with just ordering new belts.

Love this forum Big Grin

Peace

bredgeo - 2008-11-25 02:45

quote:
Love this forum Big Grin



Don't we all!!!!!!! Big Grin Wink

success - 2008-11-25 16:17

Tape head is very important too. I've forgoten that.
But the problem with this is that it's nearly impossible to find a replacement.
Realted to OEM HEADS (like those amirs) You should note that they will work perfect in playback.
But recording ... that's a difficult one, I've never replaced a head with an OEM part with good resuslts.
In two times I change heads. One was too worn out. I've never seen somethingf like that.
Lots and lots of hours of playback ... OK it was a National Panasonic ... they are endless ...

quote:
Originally posted by transwave5000:
You could do a 'blind' replacement of parts but you should be able to see what really needs replacement.

Ckeck the tape head, see if it is worn down. Also the take-up friction pad should be checked.

There are ways to get them working like-new using minimal replacement parts.
It can get expencive replacing parts and some parts are not available too.

Belts and tape heads are someting that cannot be fixed and only replaced.