UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Zelandeth · 24th Nov 2019, 6:46 pm

Doesn't really surprise me that Sun kept careful guard on the service data. I imagine the servicing and service contracts were probably far more lucrative than the sale of the actual machines.

Cheers for a heads up on those caps. Most of the others at least look to be good quality ones which I've rarely had too much trouble with before.

I took the opportunity to grab some proper photos of all the digital boards this evening and carefully reseated every socketed chip.

Photos are:

1. "P/P" - Pre-processor.
2. "MEM1" - ROM.
3. "CPU" - Self explanatory.
4. "I/O" - ...Also self explanatory.
5. "MUX" - A-D conversion looks to be the main job here.
6. "CRT" - handles producing a composite video signal to be sent to the display.

24th Nov 2019, 6:46 pm	#26
Zelandeth Heptode Join Date: Jun 2006 Location: Milton Keynes, Buckinghamshire, UK. Posts: 931	Re: Sun Microcomputer II Motortester 1215 Doesn't really surprise me that Sun kept careful guard on the service data. I imagine the servicing and service contracts were probably far more lucrative than the sale of the actual machines. Cheers for a heads up on those caps. Most of the others at least look to be good quality ones which I've rarely had too much trouble with before. I took the opportunity to grab some proper photos of all the digital boards this evening and carefully reseated every socketed chip. Photos are: 1. "P/P" - Pre-processor. 2. "MEM1" - ROM. 3. "CPU" - Self explanatory. 4. "I/O" - ...Also self explanatory. 5. "MUX" - A-D conversion looks to be the main job here. 6. "CRT" - handles producing a composite video signal to be sent to the display. Attached Thumbnails __________________ Zel's Lair - A random bag of vintage tech, lighting information and other assorted geekery Last edited by Zelandeth; 24th Nov 2019 at 6:47 pm. Reason: missed an image.