Welcome:

My recollection is that the reader has a cable to connect it to the distributor.  That goes through one of those several connectors on the back of the electrical service section.  Perhaps the connections in the plug have gotten oxidized over time?   Or perhaps you've already tested that continuity?  Do you have wiring diagrams?  Check Navy-Radio.com for a whole section on Teletype documents.

OK,  reviewing your post, I see you've already essentially done that?  Perhaps I should leave the suggestions to those who have worked on one more recently than 1981?

I think this would apply to the 33 as it does to the 28, turning the motor by hand without power (I think you can pull just a motor fuse so you still have signal power.  Then as you turn the motor slowly you can watch as parts more.

Or using the slo mo feature of your cell phone camera some times is helpful.  I'm thinking perhaps the pins aren't moving quite far enough through the tape holes to make contact.

Enough speculation ... good luck with the hunt.  Hopefully someone will provide more helpful information.


On 9/17/2024 9:36 AM, [email protected] wrote:

Hi everyone !


I am a french computer sciences teacher and I get an ASR33. I succeeded to clean it and made work well the printer, keyboard and puncher. I have a problem with the reader and so I am looking for someone who could help me.


I cleaned the reader, tested all the contacts. I plugged it. The magnet and the feed wheel are working well and the tape go forward but nothing is printed except some O and ? regardless which is punched of the tape. More, they are not regularly punched. The contacts are good from the reader pins to the distributor disc. So i don’t know what i can do now.


An idea please ?


Stephane.


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The above comments or recommendations are SWAG. Use at your own risk.

John, W9DDD