ckswartwood
New member
Hi Guys,
I was having some issues on a machine of mine (Tascam 38) where both reel were having issues. All issues listed below were resolved by completing the steps I have outlined.
Problems:
Slow Rewind
Slow Fast Forward
Bad Wow & Flutter / Modulation on playback
And when a majority of the tape was spooled to the take up reel, the playback would crawl along at about 1.5 ips
*Disclaimer: Please keep in mind, I am merely a tape enthusiast - Not a qualified technician. Take this advice at your own risk.
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Remove the Clamper Reel Hub from the machine
Remove the three screws on the Table Assembly Reel and remove
Loosen the screws on the Base Assembly Lifter and remove the lifter
Desolder the motor wires from the PCB
Remove the Heat Sink
Transistor/s from the heat sink. (don't loose the plastic spacers beneath the transistors)
Remove the Motor Mount Screws
Remove the Motor Screws (front & back) to remove the motor from the machine
At this point, you should be holding a marooned Reel Motor!
Lets remove the brushes!
To do this gently unscrew the black inlet screws to expose a washer and the motor brush.
Make sure you make note of the orientation that the brushes are placed in the motor, if you put them back in a different way, they will "re-wear" and clog up the motor again from new wearing and friction. (I use a sharpie marker to make a dot on the motor and a dot on the brush to match up. One dot on one brush, two dots for the other)
You are now free to remove the two long bolts to get the caps of the motor off
Great, We're in!
Just to ensure I put everything back together properly, I put tape on the motor shroud to signify the direction in needs to be in. (Better safe then sorry!)
Now, clean ALL of the black shedding and crap out from the motor covers, the shaft, the bearing, washer and the commutator (the bronze thing) Make sure to lubricate the bearings, better would be to completely remove the bearing for a more thorough job.
I use an old toothbrush and Q-Tips and 97% Isopropyl Alcohol to clean everything.
I use a razor blade to clean the grooves of the commutator
Here are some photos SweetBeats posted for a similar issue to illustrate a proper before and after. (Please remove these if I am breaking a rule - I didn't think SweetBeats would mind.)
THATS IT! Take these steps in reverse to get your machine back together.
I really hope this will help some people out with their own machines! After I complete these steps, my motors were quiet, smooth and FAST AS HELL!
Have fun and be safe!
ck
---------------------------------------
I was having some issues on a machine of mine (Tascam 38) where both reel were having issues. All issues listed below were resolved by completing the steps I have outlined.
Problems:
Slow Rewind
Slow Fast Forward
Bad Wow & Flutter / Modulation on playback
And when a majority of the tape was spooled to the take up reel, the playback would crawl along at about 1.5 ips
*Disclaimer: Please keep in mind, I am merely a tape enthusiast - Not a qualified technician. Take this advice at your own risk.
---------------------------------------
Remove the Clamper Reel Hub from the machine
Remove the three screws on the Table Assembly Reel and remove
Loosen the screws on the Base Assembly Lifter and remove the lifter
Desolder the motor wires from the PCB
Remove the Heat Sink
Transistor/s from the heat sink. (don't loose the plastic spacers beneath the transistors)
Remove the Motor Mount Screws
Remove the Motor Screws (front & back) to remove the motor from the machine
At this point, you should be holding a marooned Reel Motor!
Lets remove the brushes!
To do this gently unscrew the black inlet screws to expose a washer and the motor brush.
Make sure you make note of the orientation that the brushes are placed in the motor, if you put them back in a different way, they will "re-wear" and clog up the motor again from new wearing and friction. (I use a sharpie marker to make a dot on the motor and a dot on the brush to match up. One dot on one brush, two dots for the other)
You are now free to remove the two long bolts to get the caps of the motor off
Great, We're in!
Just to ensure I put everything back together properly, I put tape on the motor shroud to signify the direction in needs to be in. (Better safe then sorry!)
Now, clean ALL of the black shedding and crap out from the motor covers, the shaft, the bearing, washer and the commutator (the bronze thing) Make sure to lubricate the bearings, better would be to completely remove the bearing for a more thorough job.
I use an old toothbrush and Q-Tips and 97% Isopropyl Alcohol to clean everything.
I use a razor blade to clean the grooves of the commutator
Here are some photos SweetBeats posted for a similar issue to illustrate a proper before and after. (Please remove these if I am breaking a rule - I didn't think SweetBeats would mind.)
THATS IT! Take these steps in reverse to get your machine back together.
I really hope this will help some people out with their own machines! After I complete these steps, my motors were quiet, smooth and FAST AS HELL!
Have fun and be safe!
ck
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