1200XL M.U.L.E.
Experienced Member
- Joined
- May 9, 2021
- Messages
- 84
In a past post I described how I blew up a C7 capacitor on my 5150 motherboard by installed a CHRONOGRAPH RAMPORT card.
https://www.vcfed.org/forum/forum/g...b-a-story-and-a-blown-capacitor-c7-what-is-it
I can't get the computer to boot and I starVted wondering if blowing up the C7 capacitor and the card damaged the power supply. Just now I measured the +5V and +12V lines on one of the Molex power connectors like for a drive. The 5V line reads 5V on my multimeter but the 12V line reads 24V! When my floppy tries to spin up I see the 24V reading drop to 20V and then back up to 24V. I see the head move but the drive won't spin.
With this in mind, I think I need a replacement power supply for my 5150. Am I correct here?
What are my options? I searched "ibm 5150 power supply" on eBay and the results are few. What other options do I have?
Thanks!
https://www.vcfed.org/forum/forum/g...b-a-story-and-a-blown-capacitor-c7-what-is-it
I can't get the computer to boot and I starVted wondering if blowing up the C7 capacitor and the card damaged the power supply. Just now I measured the +5V and +12V lines on one of the Molex power connectors like for a drive. The 5V line reads 5V on my multimeter but the 12V line reads 24V! When my floppy tries to spin up I see the 24V reading drop to 20V and then back up to 24V. I see the head move but the drive won't spin.
With this in mind, I think I need a replacement power supply for my 5150. Am I correct here?
What are my options? I searched "ibm 5150 power supply" on eBay and the results are few. What other options do I have?
Thanks!