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A Nice Day

boreas

boreas

"If it sounds good, it IS good." E.K.E.
I had a good turntable day today. I picked up a Technics SL-1700 Mk2 and a Sony PS-1800A. Neither is working.

The Sony has lost its motor mounts and the belt has failed. The base needs to be refinished. Even so, I can see this as being a very successful restoration as long as I can figure out the right material for the motor mounts (some sort of foam). It has an Elac STS 344 cartridge with a not so good stylus

The 1700 spins but the automation is non-functioning. (The belt is gone.) Also, the power switch seems to be stuck in the on position as is the switch for the platter lamp. It's also going to need a new power cord and interconnects. Amazingly, it seems that the cuing is okay since it's now in the raised position. The cosmetics are good except for a small cigarette burn on the dustcover and a scratch on the front of the base. The cartridge is an Audio Technica ATP-3.

John

John
 

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You have a knack of finding the ones that I can't!!!

Especially that Technics SL-1700 MKII.:D

I got the older Technics SL-1700 singing with an old Shure V 15 RS.
 
Thanks, guys! I've made a little progress on the 1700, fixed the power and light switches and cleaned the belt goo from the arm motor. Now I need a new belt.

I've noticed that the 45 speed isn't working, just 33. I doubt that has anything to do with the automation. I'll have to sort that out.

John
 
SL-1700 Mk2 Report: I used a small ponytail elastic to replace the arm belt and it works perfectly. Cuing does still work which, based on what I read here, is a minor miracle. I still have to figure out why it won't engage the 45 RPM speed (bad microswitch?) and still need to replace the power cord and interconnects.

So far so good.

John
 
boreas said:
SL-1700 Mk2 Report: I used a small ponytail elastic to replace the arm belt and it works perfectly. Cuing does still work which, based on what I read here, is a minor miracle. I still have to figure out why it won't engage the 45 RPM speed (bad microswitch?) and still need to replace the power cord and interconnects.

So far so good.

John
Click to expand...

Just to get an idea for future references, how big is the elastic?

I use a 3 mm for some Sansui tone arm lift, works on some, some times! :D :scratch2:
 
I might be wrong but the 1700 MKII was NOT prone to the cueing issues the 1300-1500 series were. As for the belt you can use an o-ring from the hardware store, use search to find the proper size.
 
Balifly said:
Just to get an idea for future references, how big is the elastic?

I use a 3 mm for some Sansui tone arm lift, works on some, some times! :D :scratch2:
Click to expand...

I just measured another one. It's 10 cm in length and 2.5 mm in diameter. Based on what was left of the original, I think the right part is a 1.5 mm square belt. I think the length would be less than 10 cm because the thinner belt would ride lower in the pulleys. Maybe 90 - 95 mm?

John
 
boreas said:
I just measured another one. It's 10 cm in length and 2.5 mm in diameter. Based on what was left of the original, I think the right part is a 1.5 mm square belt. I think the length would be less than 10 cm because the thinner belt would ride lower in the pulleys. Maybe 90 - 95 mm?

John
Click to expand...

I'm thinking this would be the right belt.

John
 
eteller said:
I might be wrong but the 1700 MKII was NOT prone to the cueing issues the 1300-1500 series were.
Click to expand...

Ah, thanks! I thought it was the 16/17/1800 Mk2 as well.

As for the belt you can use an o-ring from the hardware store, use search to find the proper size.
Click to expand...

Good idea. It would have to be a pretty big one with a fairly small cross section. I wouldn't want to have to do much stretching because it would stress the bearings on the drive and driven sheaves.

John
 
Spinning!

Serviced, new power cord and new interconnects. Still have the ponytail elastic in place of the arm belt but, hey, it works! ;)

Still no 45 speed. I'm pretty it is the switch but am open to suggestions. Oh, well! I haven't had any 45s since I sold my last Cocteau Twins album. :)

John
 
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John you can get the service manual over at vinylengine I know cause it's my copy someone else uploaded to VE. From your pic looks like the platter is riding a tiny bit high have you tried to adjusted the suspension yet. The speed switching is controlled by IC6680 but heck as you said you haven't listed to 45's since your last Cocteau Twins album
 
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Stanton681EEES said:
John you can get the service manual over at vinylengine I know cause it's my copy someone else uploaded to VE. From your pic looks like the platter is riding a tiny bit high have you tried to adjusted the suspension yet. The speed switching is controlled by IC6680 but heck as you said you haven't listed to 45's since your last Cocteau Twins album
Click to expand...

Thanks, John. I've just downloaded the SM. The platter looks higher in that photo than it actually is. I think it's fine. That being said, I haven't reset the suspension. Probably should look int that.

John
 
Spinning Too!

I've got the PS-1800A running too. I made up a set of new motor mounts for it, lubed everything and gave it a try.

Everything works!

Including the electronic "Magnetodiode" arm return mechanism!

I have to adjust the drop speed and the return speed and I want to refinish the base and polish the dustcover and then this baby is done! :music:

John
 

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Very Nice, John. I really like the Sony, but then, I a have a soft spot for wood cases.

Glad to see you got them both working.

Dave
 
dread31 said:
Very Nice, John. I really like the Sony, but then, I a have a soft spot for wood cases.

Glad to see you got them both working.

Dave
Click to expand...

Thanks, Dave!

I'm sorta with you on the "old school" looks of the Sony. I also like the big red power button. Reminds me of the HAL 9000. ;)

John
 
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