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New project, GE 5259a tape repair

New project GE 5259a tape r

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#1 jasatc77

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Posted 20 September 2014 - 07:20 AM

Hey guys,

 

I have been looking for one of these boxes, they have a great look and sound pretty good too. I found one in need of work, I have got it all cleaned up and crackle free, now need to get the tape working. The motor spins. Upon disassembly I see there is a belt completely missing. Crap I was hoping to measure that!  Does anyone know belt sizes for this beauty ? The only other issue is the ff and rr buttons don't want to stay pressed, not sure if they will once we have a belt in a tape in. Can anyone help me out ? Thanks guys.

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#2 Beosystem10

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Posted 20 September 2014 - 10:34 AM

If you can see where it runs, then you can measure it with fine string, which has the advantage of giving you a very accurate figure. Allow for a minimal amount of stretch, so if the run is 8" in total, go for one that has a free circumference around 7&13/16" +0/- 3/16". Try a few from a multipack, it shouldn't be taut like a high banjo string but nor should it be slack like a lineshaft drive belt.



#3 Kenpat

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Posted 20 September 2014 - 12:44 PM

Those are nice sounding.  :yes:  :thumbsup:  :rock:



#4 Alberto

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Posted 20 September 2014 - 03:00 PM

Belt Size = SCQ 8.2  :yes:



#5 Alberto

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Posted 20 September 2014 - 03:03 PM

Also remove the front transport cover and check the Idler tire. They are usually worn and bad. I replaced mine with a green ( HNBR ) o-ring .



#6 jasatc77

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Posted 21 September 2014 - 07:14 AM

If you can see where it runs, then you can measure it with fine string, which has the advantage of giving you a very accurate figure. Allow for a minimal amount of stretch, so if the run is 8" in total, go for one that has a free circumference around 7&13/16" +0/- 3/16". Try a few from a multipack, it shouldn't be taut like a high banjo string but nor should it be slack like a lineshaft drive belt.

 

Great idea, I hadn't thought of that thank you sir!

 

Belt Size = SCQ 8.2  :yes:

 

Alberto you are the man thanks!



#7 jasatc77

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Posted 21 September 2014 - 07:16 AM

Also remove the front transport cover and check the Idler tire. They are usually worn and bad. I replaced mine with a green ( HNBR ) o-ring .

 

I'm not sure what that is. Can you describe what it does?



#8 Alberto

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Posted 21 September 2014 - 05:50 PM

The Idler Wheel  presses against ( mates ) and rotates the Take Up Spool. The Capstan and Pinch Roller moves the Tape across the Play Head in one direction and the Take up Spool collects that tape. 



#9 jasatc77

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Posted 16 October 2014 - 04:46 PM

Belt Size = SCQ 8.2  :yes:

 

 

ok I found a 8.0 on studio sound.com and installed it today. it seems a bit tight, but does work...kinda. when you push play it shuts itself off most of the time, when it does stay on it plays slower than it should. are these symptoms of a belt that is too tight or something else? ff and rw are working. we are close and I am pumped! where did you find the 8.2 size belt?



#10 superlew

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Posted 17 October 2014 - 03:44 AM

ok I found a 8.0 on studio sound.com and installed it today. it seems a bit tight, but does work...kinda. when you push play it shuts itself off most of the time, when it does stay on it plays slower than it should. are these symptoms of a belt that is too tight or something else? ff and rw are working. we are close and I am pumped! where did you find the 8.2 size belt?

 

Sounds like it's a little too tight.

Too much belt tension = Resistance = Slow play = Intermittent auto-stop.

 

I don't think I've ever bought a unit with a fully functional deck... :hmmm:



#11 jasatc77

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Posted 17 October 2014 - 06:33 AM

Thanks Superlew, makes sense to me. Is there other places to get belts other than studio sound? they didn't have the 8.3 that was recommended.



#12 superlew

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Posted 17 October 2014 - 12:43 PM

Check out alphagizmo2011 on eBay. His variety pack prices are excellent and he ships really fast.

#13 jasatc77

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Posted 19 October 2014 - 07:37 AM

Will do thanks!



#14 jasatc77

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Posted 20 October 2014 - 08:37 PM

Ok, while I wait for more belt sizes to be delivered with the hopes of solving the dragging cassette issue, I have installed a new antenna, and am tackling the missing plastic on the cassette door. I am thinking double sided tape to attach the plexiglass since you would be able to see a sloppy glue job right though it. I will keep you updated. I am really starting to like this box, a nice size with good sound. Just need that cassette working better.

Attached File  IMG_2023.JPG   73.27K   9 downloadsAttached File  IMG_2025.JPG   58.82K   10 downloads



#15 Beosystem10

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Posted 21 October 2014 - 05:01 AM

Double sided tape sounds like a plan, but might Velcro tape be even better? That way, you could just pop the window out if, say, you wanted the tape held securely in the door for adjusting azimuth by ear, and unlike double sided tape, velcro wouldn't lose its grip after a few fingerprints and opening cycles had aged it. ;-)

 

You'd need (ideally) to mill a rebate around the part of the window that has the tape attached in order to allow for the 0.040" thickness of the velcro tapes but as you're starting with fresh plastic this could be done while you're in about at it, the end job would look totally stock from the out. :-)



#16 jasatc77

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Posted 21 October 2014 - 03:03 PM

well, not terrible, you can still see the tape under the plexiglass, but it certainly is functional.Attached File  IMG_2030.JPG   75.38K   10 downloads

 

Attached File  IMG_2029.JPG   55.38K   9 downloads



#17 Beosystem10

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Posted 21 October 2014 - 04:34 PM

Wow! That's a very tidy job. You'd need to be the owner of a similar box - that had its original piece of perspex in that door - to notice the difference and even then it wouldn't offend anyone's eye 'cos it just looks so right. :thumbsup:



#18 jasatc77

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Posted 21 October 2014 - 06:56 PM

Wow! That's a very tidy job. You'd need to be the owner of a similar box - that had its original piece of perspex in that door - to notice the difference and even then it wouldn't offend anyone's eye 'cos it just looks so right. :thumbsup:

Thank you John, I believe the camera has done me some justice but I'll count it as a success!



#19 jasatc77

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Posted 28 October 2014 - 09:23 AM

I installed the correct size belt, and it was still playing slow. So I turned up the motor to the correct speed but now it sounds warbly or like its underwater. You really only notice when there is a  note that rings out for a while. Anybody have an idea how remedy this? This box is almost perfect :yes:



#20 baddboybill

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Posted 08 February 2016 - 09:21 AM

Sorry so late in posting but issue is bad pinch roller. It's probably dirty and possibly dried out and cracked.

#21 tapemaster1.875

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Posted 08 October 2016 - 01:25 AM

I just bought one of these with tape deck issues and this is some great advice! Hope I can get it to play and record tapes smoothly with a proper belt and new capstan roller. 8.3 right?

#22 BoomboxLover48

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Posted 08 October 2016 - 03:21 PM

Like Bill mentioned the sound quality issue is due to a bad pinch roller. The rubber on the pinch roller got hardened and is not catching the tape pressed when against the captain. If the rubber is not looking that bad, gently sand it in play mode without a tape - taking extra care not to rub on any other parts except the pinch roller rubber. I would roll a 400 grit emery paper on a thin tongue depressor wood piece or an ice cream handle and hod it against the pinch roller and make it slightly rough.

 

If the rubber is so hard, then we might have to replace it. Hardened rubber won't grab the tape and will cause distorted sound.

 

A new pinch roller would make a world of difference.