Fred, If this is one of my REX units (shipped with wood spacer and a purple polka-dot ribbon) then my apologies for your issues. I tested the spacer sizing in 100, 102, and 200 units and found what seemed like the right size to prevent over-insertion and "spontaneous removal". I'd have to check my notes, but I sanded my boards down to a precise size which I think was 0.048" (~1.2mm). They do require a very firm insertion into the socket -- you may feel uncomfortable applying that much force -- but you should feel the board snap into place below the catch in the pins. If you don't feel a "snap" then it is possible that the spacer board is too thick for whatever reason. I don't use any adhesive, etc. on my boards to make it easier to repair them should anything go wrong, but I've also had one other issue with a user neglecting to install the spacer which caused damage to the REX and his M100, so I will be changing to adhesive spacers on my next batch (which I'm producing the Tandy Assembly).
When you install REX, do you feel it snap into place? Can you send pictures of the installed REX? (You'll have to find a host for them since the list doesn't handle attachments; or send them directly to me) Brian's work with the new REX PCB and the 3D-printed carrier looks neat -- I'm following his progress -- so if you continue to have fit issues one of those carriers might solve your problem, as well. https://photos.app.goo.gl/aNfjvB1XucSehPGB9 -Josh On Sat, Jul 27, 2019 at 8:29 PM Stephen Adolph <[email protected]> wrote: > > Hi Fred, > > Honestly my first thought here is ... what software are you running and have > you ever done a total wipe of rex followed by a reload from scratch of the > software? > > These symptoms more or less sound like corruption of the directory which can > happen on older software loads. > > I've tried to catch all the fixes in my last supported software load. Which > is at bitchin100. > ..Steve > > > On Saturday, July 27, 2019, Fred Whitaker <[email protected]> wrote: >> >> I have been having trouble with my REX chip becoming loose and losing data >> as a result. The computer also locks up. I was wondering if anyone had any >> ideas about better support for the chip corners, instead of a loose piece of >> wood under it. >> I was thinking of trying to find some small diameter thin stick on feet, >> about 1/8 inch thick. Has anyone had a similar problem? >> The problem will be the same with any of the ROM's on similar boards. The >> Super ROM that I have is on a similar board but it also has a full length >> spacer glued to the bottom of the board. >> Until I can resolve this issue I am putting my REX chips in storage. This is >> only true for the Model 100 and Model 102.
