Recent content by jeauxlb

It's a great point and one I've been happy enough to ignore in my quest for a working display. I note that for reboots immediately after the display was failed, I was able to access its web server to verify it was fully booting. I suspect it is a weird failure mode where a failed chip can...

Hi all, following up to say a big THANK YOU. I ordered the part linked above, and removed the old UE8. Once I soldered in the new part, it immediately worked and I have a functioning SE/30 again. Super happy and very grateful. Thanks for the help to solve this issue.

https://jcs.org/subtext this will run a BBS on system 6

Thank you @bibilit and @imactheknife, I’ll focus my next efforts around cleaning/replacing UE8. Will this part do the trick? https://www.mouser.com/productdetail/texas-instruments/sn74ls166ad?qs=sGAEpiMZZMtsbn1GaJysl8drSYt3ukOhxRl7aLOSxWU%3D

I started it up this afternoon after a thorough clear with IPA around the video area and letting it sit overnight without power. I at least got some activity on screen: If this provides any direction for where I should look next would be very grateful to hear your thoughts. Many thanks.

I have also traced out A(0) to A(7) heading into UA8–UD8 chips. No continuity issues found.

Was powering along this afternoon, installing everything I'd need with my new network connectivity in the SE/30. I was serving a static website and went to check on the progress of my FTP upload, when suddenly I could connect to it no more. I went over to it, and the screen was entirely blank...

From your hints I was able to find a thread on Tinker Different that had various part numbers. The part I was after (SE/30 logic board connector) is Molex Mini-Fit Jr 39-28-1143. Thank you!

Just finished up my latest SE/30 recap, and very happy to now have a working screen and an operational speaker. I used the hot air method with heat-resistant tape and some box-cutter blade shield. Sadly I seem to have left a gap in my heat shielding, and partially melted the logic board...

Tonight after a few solid hours of checking resistors, PSU levels, connections and the analogue board, I got it going. What worked: 1. Checking all resistors. R26 was an open circuit so that got replaced with a 1W resistor (over-spec'd) to try and guard against any future issues causing...

I've taken a close look and the connectors don't seem to have scorch marks anywhere on the analogue board. Here's a shot of the inside of the analogue board's protective sleeve. I only looked at it today — I suppose this would be suggestive of some components that have had a bit of a failure...

Thank you @Bolle. Just to clarify your cracked solder comment, are you suggesting checking the P2 connector on the analogue board side?

It's a vertical line on the screen. I don't currently have an oscilloscope to check those outputs but will chase one down to check this. Thank you for the additional background on this fault. For now, I have seen that in-circuit resistances are extremely low for a number of resistors on the...

Thanks. The caps all look pretty good on the logic board so no obvious impacts to other components. I will still get to replacing them. Did you have to replace the ICs completely to get it working again?

Hi there, relatively new to the forums but not to the SE/30. I picked up an SE/30 today that has a known issue of a bright white line at startup. Before picking it up I had expected/hoped to look at R19 on the analogue board and swap it straight out with a new component. What I have found is...