DEC VR260 service docs / common failure modes?

Bill Degnan billdegnan at
Mon Aug 10 12:37:55 CDT 2020

One comment...if you don't have the correct cable and a system that is set
for the correct refresh rate, it may appear that the monitor does not
work.  Be sure you have compatible equipment.  This was a specialized

On Mon, Aug 10, 2020 at 1:19 PM Douglas Taylor via cctalk <
cctalk at> wrote:

> Josh;
> I have a DEC VR150 that is nearly functional; shows full screen but the
> H/V are not in any sync at all.  Would love to use it with a VaxStation
> 3100.
> Opened it up and found it quite a complicated monitor, not like a simple
> PC monochrome monitor.
> Purchased a microfiche manual off ebay, but haven't been able to view it
> yet.
> Eager to hear how you do with your larger monitor.
> Doug
> On 8/9/2020 3:10 AM, Josh Dersch via cctech 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...
> >
> > Thanks as always,
> > Josh

More information about the cctech mailing list