On 09/05/2016 15:03, "Swift Griggs" <[email protected]> wrote:
> On Sun, 8 May 2016, Adrian Graham wrote: >> Anyhoo, the VT101's screen is showing the >> stretch-at-top-compress-at-bottom issue, is that adjustable using the >> troubleshooting guide in the technical reference or am I looking at >> replacing some caps? > > It sounds like a problem with what they call "deflection". I don't know > about VT101's specifically, but there are usually a set of pots on the CRT > logic board (the PCB mounted on the rear of the tube) you can adjust for > such things. Check out this section of the Monitor Repair FAQ: > > http://www.repairfaq.org/sam/monfaq.htm#mondefl > > Depending on the type of distortion you are seeing, you'll need to adjust > the pots to compensate. Thanks for that, I now know it's vertical deflection which is adjusted by A102 on the monitor board so I'm just about to give it a tweak once I find my plastic trimmers and a screwdriver small enough to get the top off, it's the only VT1xx I have with all fasteners intact. Also that repairfaq lost me an hour at lunchtime while I read it, why did I not know about it before! -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?
