Hello everyone!
I bought this IBM 5170 in very poor condition.
The configuration is:
Type 1 motherboard
First version of bios (2 eprom U27/U47)
286 6mhz CPU - No FPU
512kb ram
MDA adapter and 5151 monitor
First version of HDD/FDD Controller
Serial and Parallel card
Type 2 HDD ST-4026
Original 5.25 1.2 FDD
Picture here:
https://ibb.co/m9Wk4rf
https://ibb.co/wY9xBKv
https://ibb.co/gSRr6Lb
https://ibb.co/ss08VvD
https://ibb.co/C5DqCbg
https://ibb.co/x38SNc7
The main problem is a lot of corrosion maybe from the acid battery (however I do not find battery inside)
I took everything off, remove the rust from the case and clean the motherboard with water and soap and after with white winegar, and again water.
After I had to replace the keyboard AT connector (with some difficoult becouse was not easy to desolder it but a friend more expert with soldering jobs helped me)
I open the PSU clean it with compressed air and check the voltage 5v and 12v and that's are good.
This machine have a faulty HDD controller that prevents to start the computer.
Without this card the motherboard start and pass the ram test and give the error 601 and 161
My friend that have a later version of 5170, give to me his second version controller and I try to start
With this controller attached no more 601 error but now start the problem
I tryed the Floppy drive to another computer (a 486) and it works very good, I format some floppy and make ADV Diagnostic disk image and some DOS disk (PC-DOS 3.30 PC-DOS 2.0 and a 1.2mb 6.22 version)
I put the floppy drive back on the 5170 and when try to boot from it the system halt with only cursor on screen.
Without floppy disk inside or with a blank floppy it go to the BASIC page.
I try another generic IDE HDD/FDD controller with this drive and same result.
What can the problem? maybe some damaged components on the motherboard but how I check it???
Thanks to who can help me
I bought this IBM 5170 in very poor condition.
The configuration is:
Type 1 motherboard
First version of bios (2 eprom U27/U47)
286 6mhz CPU - No FPU
512kb ram
MDA adapter and 5151 monitor
First version of HDD/FDD Controller
Serial and Parallel card
Type 2 HDD ST-4026
Original 5.25 1.2 FDD
Picture here:
https://ibb.co/m9Wk4rf
https://ibb.co/wY9xBKv
https://ibb.co/gSRr6Lb
https://ibb.co/ss08VvD
https://ibb.co/C5DqCbg
https://ibb.co/x38SNc7
The main problem is a lot of corrosion maybe from the acid battery (however I do not find battery inside)
I took everything off, remove the rust from the case and clean the motherboard with water and soap and after with white winegar, and again water.
After I had to replace the keyboard AT connector (with some difficoult becouse was not easy to desolder it but a friend more expert with soldering jobs helped me)
I open the PSU clean it with compressed air and check the voltage 5v and 12v and that's are good.
This machine have a faulty HDD controller that prevents to start the computer.
Without this card the motherboard start and pass the ram test and give the error 601 and 161
My friend that have a later version of 5170, give to me his second version controller and I try to start
With this controller attached no more 601 error but now start the problem
I tryed the Floppy drive to another computer (a 486) and it works very good, I format some floppy and make ADV Diagnostic disk image and some DOS disk (PC-DOS 3.30 PC-DOS 2.0 and a 1.2mb 6.22 version)
I put the floppy drive back on the 5170 and when try to boot from it the system halt with only cursor on screen.
Without floppy disk inside or with a blank floppy it go to the BASIC page.
I try another generic IDE HDD/FDD controller with this drive and same result.
What can the problem? maybe some damaged components on the motherboard but how I check it???
Thanks to who can help me
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