Re: Amplifone won't focus!

From: Curtis H. Wilbar Jr. <vector_at_hawkmountain.net>
Date: Tue Jul 29 2003 - 08:31:42 EDT

I have one red HVT that is working.... and given the cost to
replace it... I hope it stays working for a long time :-)

-- Curt

>From: Dave Langley <robotron@ntlworld.com>
>
>
>Hi again ...
>
>> > When driven by a space duel PCB I cannot get the picture to focus, turning
>> > the focus control on the HV board makes no difference at all.
>>
>>This may sound obvious, but check the wire comming from the focus pot. It
>>can break but stay in place.
>
>That did occur to me this morning. I sent out the Email last night after
>I'd packed up for the night (it was late and I was getting up early!)
>
>Having looked at the schematics this morning, am I right in presuming that
>if the HVT is giving out volts to the focus/screen block if the screen
>control works but the focus does not? Is there any way to test the focus
>block in/out of circuit ?
>
>Anyone care to comment on this?
>
>If this is the case then it must be the block itself (I have a scrap HV
>board somewhere to rob from) or the wiring to the tube. The tube *should*
>be OK as it was taken from a working raster monitor.
>
>I'll have another play tonight.
>
>Anyone care to take a bet on how long this HVT will last? How many out
>there have red HVTs that are still running? The one that I have running
>(at least partially) was taken from a damaged HV board with serial number
>17800 (ish).
>
>
>
>Dave Langley
>www.robotron-2084.co.uk

Curtis Wilbar
Hawk Mountain Networks
vector@hawkmountain.net

My e-mail is protected against viruses and spam by MailGuardian
                  http://www.mailguardian.net
          Top notch protection at unbelievable prices

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@vectorlist.org. Please direct other
** questions, comments, or problems to chris@westnet.com .
Received on Tue Jul 29 08:31:46 2003

This archive was generated by hypermail 2.1.8 : Fri Aug 01 2003 - 11:45:44 EDT