Question about Audio Players & Recorders
Hello, I just replaced both belts on my deck, which was been standing unused for almost 10 years. But now when flywheel is OK, another problem raised. Reel cap-s don´t turn, which means that tape will not wind/rewind and playback is cancelled after 2 sec, because tape will not be winded on poles. The reel motor is turning and also the pulley and rolls are turning as they should. But it seems to me, that reel tape assembly turns too tight (when turning by hand). So maybe the resistance is too high for the gear assembly to be able to turn cassettes. I took all the cassette drive assembly out of the deck, but it is still impossible to see if there is a way to make reel tape assembly to turn easier. If I remember correctly, they should turn without any resistance, if the brake pad is lifted of from reel flywheel. Any experience and comments how to fix this problem? Thanks, Avo.
If you have a service manual, go to exploded view 3 and look at 31.
This is the FR idler sub assembly. Check the rubber tyre or tire, see if it has hardened. This is driven by the reel motor and flip-flops between the table reel assemblies to drive fast forward,reverse, and play take up.
Also check the reel assemblies for oil that's gone to gunge.
I'm using brass valve oil with PTFE by Denis Wick, That's musical !
Posted on Mar 27, 2013
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Posted on Jan 02, 2017
usually its a capstan drive belt. $10-18 for the belt & 30mins repair time - you'll be up &brunnin b4 you know it email@example.com
Posted on Jun 20, 2008
SOURCE: threading reel to reel
Depending on which brand of recorder you have, most do have a general threading scheme. As you are facing the unit, the supply (full) reel would be on the your left and the take-up (empty) would be to the right. Position the supply reel so that the leader end of the tape will be on the outside. Pull the tape end around the shut off sensor lever so that it moves freely. Now pull the tape leader between the rubber pinch roller and capstan (in the case the unit has dual capstans). If it has a single roller on the right side, pull the tape between the heads and then between the roller/capstan. If unit has dual shut off sensor levers, pull tape around this sensor as you did the first, making sure it moves freely. Then thread the tape leader into the take-up reel slot. Press play. Both reels should turn counter clockwise.
Posted on Aug 03, 2008
SOURCE: Sony reel to reel TC -765
I too had this problem with my tc765. I found the two pinch rollers were not lifting up and fully pushing the tape against the rotating capstans in the play/record mode. Solution to my problem involved partly dismantling the pinch roller assembly, cleaning off the old solidified grease and re-lubing with a molybdenum grease. Note: the top plate has to come off first,then the rotating guides and tensioning pegs. Then the cast head cover and flap. It was a time consuming operation, but well within the scope of competent DIY in my opinion.
Posted on Aug 20, 2009
This could be a head fault? Another possibilty is the preamp stage. You will need to look for something that would take out both channels. Such as an IC.
Posted on Sep 11, 2009
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