Xref: utzoo comp.terminals:1453 sci.electronics:7281
Path: utzoo!utgpu!watmath!iuvax!purdue!bu-cs!buengc!bph
From: bph@buengc.BU.EDU (Blair P. Houghton)
Newsgroups: comp.terminals,sci.electronics
Subject: Hacking Screen Blanking on a vt220
Message-ID: <3642@buengc.BU.EDU>
Date: 6 Aug 89 21:59:36 GMT
Reply-To: bph@buengc.bu.edu (Blair P. Houghton)
Followup-To: comp.terminals
Organization: Boston Univ. Col. of Eng.
Lines: 28

Thanks to many fortuitous monetary circumstances, and the joys of
living three blocks from Eli Heffron and Sons, Inc., I am now the proud
owner of my very own pre-owned DEC vt220 terminal (alla you guys at DEC
congratulate me, now) and it's a babe.

What I'd like to do with it, though, is to reduce the amount of time
before screen-saver-blanking occurs.  It's set to 30 minutes, and
(it appears) there is no way to change that from outside.  Basically,
I can't get there from here.

What I imagine I can do, however, and I'm not above soldering things
and hanging buttons on wires out the ventilation louvres, is locate
the blank-it-signal line and kludge it so I can force it low myself,
or move a connection on a counter to shorten the reset-time.

Ahh, I ask, but _where_ to look for these signals?  Anyone know?

Some other questions that come to mind are:

	Does DEC cover used boxes?
	If so, will this not void my warranty?
	Can I get a schematic for a discontinued item from DEC?

				--Blair
				  "Would it be easier to
				   just bash the CRT with a
				   hammer and replace it when
				   I get back from the bathroom?"