PDP 11 Repair - Part One

A video series on the attempt to get my PDP11/34a working again.

First we start with basic overview, checking of voltages and the like.

(Now in HD widescreen :)

Category:

Science & Technology

Tags:

• geek
• computing
• vintage
• pdp11
• logic
• analyser
• voltages
• repair

[uiop988]

just out of random curiousity how much does this thing weigh?

[jpkiwigeek]

@uiop988 Maybe 40lbs? The thing is more awkward than heavy. (Mind you, when you compare it to a 2200lbs IBM SP/2, your frame of reference may be a little skewed)

[uiop988]

@jpkiwigeek, this came out in like 76 too right after the altair, but was it a personal computer?

[jpkiwigeek]

@uiop988 The PDP-11 series predates the Altair, or any PC for that matter - it's a minicomputer, they were designed to be affordable business/research computers (competing with mainframes). The first PDP11 was sold sometime in 1970, and the last model sold in the early 90s.

[conoba]

Where did you get the documentation of that system?

[jpkiwigeek]

@conoba The holy grail of documentation sites - BitSavers

[Serpico261]

@DjblMan13 hahaha

[TheChromebuster]

Those are older models, right? aren't those models that existed like in the 1970's? I always though that PDP-11 was one of the first OS's.

[DjblMan13]

I think my brain just exploded :S

[gbowne1]

I used to belong to a 'DECUS' group here in WA. i did have a lot of 11/40, 11/70 and 11/23 boards. Flip chips are cool!! :-)