Recent content by cannfoddr

Pretty much what I was thinking. I have a mouser cart with the F258's, UA-G8 and some resistor nets, and a couple of Zilog branded SCSI chips that I am working on finalising. I am having trouble tracking down something for RP9 - they seem to be out of stock with a MOQ of 2000! At this point...

I picked up this SE/30 board on eBay and I think it’s going to be a challenge. There is quite a bit of visible green gunge to deal with. I have scrubbed down with vinegar, and IPA soak and some contact cleaner. Caps are off and there is some pad damage to repair. Folks in here have pointed...

Thanks for this - I didn't realise that 53C80 has different manufacturers. I will add one to my component order for this logic board repair

I picked up a 'spares' SE/30 logic board from ebay - OK I didnt look closely enough at the pictures, live end learn, and discovered once I started working on it aht the SCSI controller chip is GONE! Looking at another board I can see an NCR 53C80 p/n 609-3400257 a few google searches are not...

looks great - the parametric stuff is really cool

My first ever Mac was a G4 15", I think the USB 1.0 model.  I gifted it to my Niece to take to University here in the UK. I saw this as a £0.01 auction on eBay and ended up picking it up for the princely sum of £16.00.  The seller contacted me to say the keyboard had gone missing so the...

So I have some progress to report.  I checked all the continuity between UF8 -> UGC -> HSYNC Pin on the main board (Pin 11) and there is continuity everywhere there should be. So I went ahead and replaced UF8 and I now have VSYNC.  The picture fills the screen but is garbage:   The...

Just fired up my recapped SE/30 and put the network card back in.  I found some diagnostics on the HD and fired these up and am getting an address error from the Hardware diagnostics.  Card is using the dynaport driver but its a Shiva Access-T  The drivers seem to load and the led flashes...

Is it normal to have a Mac SE/30 with an 800K drive.  One of My SE/30s has a PC compatible FDD which has successfully formatted and written to a 1.44MB floppy.  The other won't have anything to do with the 1.44 Floppy disks and just ejects them when I try to format them.  I have some old Mac...

One of the case screws on My SE/30 is no longer biting and just goes round and round.  Has anyone got a solution for this?

Whilst waiting for my UF8s to arrive for the board with no V-Sync I cracked open my (mostly) working SE/30 and pulled out the logic board for its recap.  This is my second attempt. It mostly went a lot smoother this time all the can capacitors off with no damaged pads using a cheap hot air...

Board is re-capped (plus a trace repair to one I damage removing C2).  Scrubbed, IPA soaked and dried. Unfortunately I am still looking at a horizontal line.  I know its board related as another board works fine in this chassis.  I am off to do some reading about UE8 as a potential cause and...

So its all back together after the recap and the IPA soak.  I switched on got the chime and I can hear the had disk booting but I have still just got a single line display! I know the chassis is good - I've connected another SE/30 board and it displays fine, this board exhibits the same problem...

So the last few parts turn up and I made some progress. This is my second ever trace repair, first one on a mac.  Its just above C2 on the left: The whole board is now having a well earned bath in IPA after a good scrub down with an anti-static brush: I'll let it soak overnight then dry...

So almost finished the recap today MOSTLY went well BUT looking at the photos above I think I damaged a trace when desoldering C2 - you can see it in the above photos.  I have some thin wire and solder mask on order so I will need to fix the trace before I can replace C2.  Fixing traces is well...