Recent content by GreenBar0n

Thanks guys! Almost sad it's over now, it was a fun struggle :)

Apologies for shrugging this excellent observation off, I wasn't thinking clearly and was overwhelmed by the scope of all of this LB's problems, you were exactly correct, UE8 does not go to UD8, it was supposed to go underneath UD8 and UC8 to where a hidden via is located and then on to the...

I just bought an NOS MC68030RC33B, for an SE/30, from here: https://www.ebay.com/itm/371776928912 I offered him $30 and he took it - might try offering less and see if he'll haggle. Fast shipping, no complaints.

I saw that one for sale yesterday, you got the hardest to find part with an old SE/30, a working/restored logic board (y). That makes up for the case not matching, imo. Great upgrades too for the floppy and HDD. Congrats!

There looks to be a lot of spots on your board that could be a problem. The RPx chips are the Resistor Packs, if these have rotted traces it can cause all sorts of issues. On any trace where you see black or discoloration, it could be a broken trace. You'll need to verify continuity with a...

It sounds like you now have what's known as the fast-chime, not the regular speed, or slow-chime. From watching CayMac Vintage repair videos on YT, he found issues with memory with the fast-chime condition. There is an SMD cap that leaks below the first memory slot, might be worth inspecting...

In looking at your logic board pictures on the first page, that's some serious oxidation/rust. It would be a good idea to soak the board in vinegar, or use an ultrasonic cleaner with detergent specifically for electronics, to stop that corrosion. The pictures appear to show broken traces on...

Nice work! That's exactly what I'm seeing on mine too, missing pin 4 on UD8, A0 - but also pin 12, A1, a new F253 will be here Monday . Congrats!

I had (4) broken traces on my UE10 ASC, including Pin 35 +5V, repaired and verified them all and still get no sound. Socketed UB10 and 11 and verified every connection, still no chime with speaker or Line out - running out of causes to troubleshoot. The new Se/30 will be here this Friday...

I had heard that just one ROM connection missing will take down the entire system, but I was thinking the chime would still offer a diagnostics in such a scenario. Would you happen to remember how many of the pins or traces were not connecting properly from your ROM, in order to produce this...

I should've said that I was testing the ROM slot by connecting the scope to the pins themselves, without the ROM in the slot - I'm seeing problems with the wave forms at the pins. Update: I found that UD8 is missing signals entirely, thanks to the Simasima Repair Guide. I've ordered (4) of...

I have not tried to tighten the pins, I have wiggled the ROM in the slot and never get any change. Did you have a chime with loose pins, or ever get it to chime in that condition?

Thanks for that! Y3 seemed good to me too, but I was having some strange clock signals and intermittency with the square waves in the ROM socket, which I'll need to identify where the problem is actually coming from. I bought another Se/30 that works that will be here late next week, hopefully...

What's unpredictable are the components and traces that are rotted from electrolytic fluid and the corrosive vapors that accompany them, from the leaking caps found on an SE/30. Clock signals, Reset signals and voltages should all be repeatable from unit to unit, if there's nothing actually...

Thanks! I have a brand new Reloaded V5 board here, I'm trying to figure out what components may have been affected by the cap leaking; this is why I am asking about Y3, it was very close to UE10 which has had all of the traces toned out and is confirmed to be working, yet still no chime. I have...