Hi Jeff, Well, I'll make cap checks one of the first things I do with my next M100.
Also, both my son and I will be checking out both your and Josh's videos before we crack the case open tomorrow. Thanks for the much-needed pointers, george g. --- Please note that this email is coming from my new account. Change the contact information you have for me to send emails to georgeogood...@orgoodman.net Thanks! On Fri, Nov 5, 2021, at 5:28 AM, Jeffrey Birt wrote: > Hi George, > > As Josh mentioned the power supply is a common problem on these machines. The > electrolytic capacitors leak and their value changes. The M100 is one of the > few machines I consider a must for recapping. Using the Backpack, means using > the serial port which places an additional load on the -5V supply (in > addition to the screen.) I suspect your -5V was right on the edge of failing > and this pushed it over. > > I think Josh and I have both done videos about the recapping process if that > would be of help. > > Jeff Birt > > *From:* M100 <m100-boun...@lists.bitchin100.com> *On Behalf Of *George Goodman > *Sent:* Thursday, November 4, 2021 2:19 PM > *To:* m100@lists.bitchin100.com > *Subject:* [M100] M100 display suddenly less visible > > > Hi all, > > My M100 display seems to have taken a turn for the dim. See the images in > this shared folder —> > *https://www.dropbox.com/sh/y1cpftct6dgqy2j/AAAEb3PmIC1b30qh7FV_WX4ea?dl=0 * > > I can’t point to anything that happened. I started an install of TS-DOS from > my Backpack and, once the Initial Program Load began, stepped away from my > desk to get a glass of water. When I returned a few minutes later I thought > the M100 had flat out died. I removed the Backpack and tried turning the M111 > on and off and even did a hard reset. No joy…I thought. > > I happened to sit down at my desk and catch a more extreme viewing angle of > the display. That’s when I realized that there was just a display issue. I > verified that I can start up Basic, make the system beep, open Text, etc. > However, I haven’t found anything that will get the display back to good > viewing from overhead. > > BTW, I did try the contrast dial and that didn’t have any impact. The images > in that shared folder were taken with the contrast at its highest. > > Does anyone have suggestions for debugging and fixing this? > > Thanks, > > george g.
