Hey there.

I got an PDP-11/34A herein the museum and trying to restore that heavy beast. Started with cleaning and dismantle the whole thing.
The a friend of mine restored the PSUs inside while i did the cleaning of the backplanes and cards.

First try was just the DD11-PK Backplane with UNIBUS Terminator and tried to read and write registers. Worked out well about 10 minutes when the 7 segment displays goes blank and only one Zero was visible on the right side.

Restarting the PDP doesn't seem to work and the console was not longer responsible. I could feel IC27, a DM85S68N RAM Chip, was getting quite hot. So i soldered that IC out. Ordered some of these RAMs on eBay but still waiting for them to be delivered.

Someone here have experience with a PDP-11?

Regards
Andreas

... Kautzner Computer Museum - https://kcm.or.at

--- Mystic BBS v1.12 A49 2024/05/29 (Raspberry Pi/32)
* Origin: KCM BBS (21:1/218)

I got an PDP-11/34A herein the museum and trying to restore that heavy beast. Started with cleaning and dismantle the whole thing.

You got quite a piece of History there...

Cheers,
Malvinas

Islas Malvinas, siempre Argentinas!

... Islas Malvinas, siempre Argentinas.

--- Mystic BBS v1.12 A47 2021/12/25 (Windows/64)
* Origin: The Vault BBS (21:4/167)

On 03 Feb 2025 at 01:57p, goto_KCM pondered and said...

I got an PDP-11/34A herein the museum and trying to restore that heavy beast. Started with cleaning and dismantle the whole thing.

Very cool. Congrats.

Someone here have experience with a PDP-11?

I think you're going to have a lot more luck on the
cc-tech mailing list, honestly.
https://www.classiccmp.org/cctech.html

--- Mystic BBS v1.12 A48 (Linux/64)
* Origin: Agency BBS | Dunedin, New Zealand | agency.bbs.nz (21:1/101)

I think you're going to have a lot more luck on the
cc-tech mailing list, honestly.

Hey, thanks.
Will give it a try!

Regards
Andreas

... Kautzner Computer Museum - https://kcm.or.at

--- Mystic BBS v1.12 A49 2024/05/29 (Raspberry Pi/32)
* Origin: KCM BBS (21:1/218)