DEC VR260 service docs / common failure modes?

Peter Coghlan cctalk at
Sun Aug 9 18:02:31 CDT 2020

Josh Dersch via cctalk wrote:
> Hi all --
> Picked up a non-functional but otherwise nice looking DEC VR260 (19" b&w
> monitor) on the cheap, hoping to use it with my VAXstation 2000.  From what
> I've read, these were never the most reliable displays.  Curious if anyone
> has any information on common failure modes, or has service docs squirreled
> away somewhere.  I've at least found schematics, so I have something to go
> on, but it's not exactly the most straightforward design I've poked at.
> Right now when powered up I hear a repeated low hum from the transformer
> followed by a soft ticking noise so I'm guessing I've got power supply
> issues at the very least.  Unsure what I should expect the monitor to do if
> it's not being fed a valid video signal (I haven't yet tried to hook the
> VS2000 up to it) -- whether it'll go into free-running mode or do mostly
> nothing until it has something to sync to...

Is a VR260 anything like a VR262?  I have a pair of the latter and could
probably do some measurements for comparison if that would be useful,
assuming mine still work...

Peter Coghlan.

> Thanks as always,
> Josh

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