Quote:
Originally Posted by jlb2
AHA!
You probably need to clean the whole transport on such an old machine. Be aware that the video heads are very fragile though, and that if you don't do it the right way they will snap right off! In particular, don't clean them while spinning (important!), wipe the heads horizontally, never vertically!, and don't use q-tips! and don't use paper towels either, they tend to shed on the heads and sometimes the pressure of your finger can be
enough to break them if you are not extra careful. There are specific flat-shaped chamois tips made specifically to clean the video heads without applying pressure on them, they can be a good investment.
Check this page for a description of the procedure.
It may be a good idea to ask your friend to show you how to do it the first time, if he's good he will save time and avoid nasty problems. While you're at it you can also ask him if he doesn't have a service manual by any chance 
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all the manuals got tossed when shaw bought out videon and he worked on sony's
pulled it outa the case to look inside some signs of humidy damage
http://youtu.be/3tM1lg89QIo aka lots of dirty contacts
o i finaly got some audio to come through