Hate to ask, but been reading this forum, watching videos, etc. for 2/3 weeks and have got to a point where I'm stuck.
Background; I recently purchased a Macintosh SE/30 from eBay listed as powering on but nothing on screen. Wanting a new project, I purchased it and yes, no boot chime, no display, but fan & HDD do spin. Idea was to have a go at fixing it otherwise create a funky R Pi retro gaming machine. Board looked really clean, no obvious leaking caps or battery.
Following the numerous guides/video here and elsewhere I've:
Washed in white vinegar, then washed & soaked in soapy water and rinsed - tested and now get a boot chime, still no display
Removed & replaced all capacitors with new Tantalum as per https://wiki.68kmla.org/Capacitor_Replacement#Macintosh_SE.2F30_.28630-4198-11.29
(Only difference is I have a Electrolytic cap for C6)
Positive pad came off C6 so have a jump wire to pin 7 of UB11 after checking schematic and saw others had done this.
Replaced battery as read 0v on meter (and was from 1998)
Powering on I get a boot chime, HDD appears to be loading OS as light flickers a lot on the front. There is also a slight glow in the glass end of the tube. All capacitors on the analog board and inside PSU look ok.
I'm guessing there is now an issue with the tube but haven't found any details for checking this. Can anyone help? Got to a point where I'd like to get it working, even though my original idea was to give it one go then gut it.
Thanks
Richard (UK)
Background; I recently purchased a Macintosh SE/30 from eBay listed as powering on but nothing on screen. Wanting a new project, I purchased it and yes, no boot chime, no display, but fan & HDD do spin. Idea was to have a go at fixing it otherwise create a funky R Pi retro gaming machine. Board looked really clean, no obvious leaking caps or battery.
Following the numerous guides/video here and elsewhere I've:
Washed in white vinegar, then washed & soaked in soapy water and rinsed - tested and now get a boot chime, still no display
Removed & replaced all capacitors with new Tantalum as per https://wiki.68kmla.org/Capacitor_Replacement#Macintosh_SE.2F30_.28630-4198-11.29
(Only difference is I have a Electrolytic cap for C6)
Positive pad came off C6 so have a jump wire to pin 7 of UB11 after checking schematic and saw others had done this.
Replaced battery as read 0v on meter (and was from 1998)
Powering on I get a boot chime, HDD appears to be loading OS as light flickers a lot on the front. There is also a slight glow in the glass end of the tube. All capacitors on the analog board and inside PSU look ok.
I'm guessing there is now an issue with the tube but haven't found any details for checking this. Can anyone help? Got to a point where I'd like to get it working, even though my original idea was to give it one go then gut it.
Thanks
Richard (UK)