Recent content by nater1217

The boards and components have been ordered. I still cant send a PM since I haven't hit 10 posts yet. Could you PM me? Unless you had another way you wanted me to get in contact with you. If anyone else wants a board, let me know and I can send you one, just cover the cost of shipping.

Thanks for your work in making this. I just got a Qualstar 1260, so I'll be building this board in the coming months. Also thank you for providing so much documentation with the project as well. I'll respond to the thread with my results once I get around to building it.

I figured this out. Hopefully this will help someone in the future. I also submitted it to pinouts.ru. I don't have any HP-HIL devices to confirm the HIL pinout, but I'm 99% sure since I can see some data on pin 8 with a scope. Pin Number Pin Name Description 1 +5V 5 volt supply for PS/2...

Hello, I just got an HP 715/100. It has the 10 Pin modular jack that requires an adapter box to use either HP-HIL or PS/2 keyboard and mouse with it. Does anyone know the pinout of this jack, or does anyone have the A4022-62005 adapter that they could take pictures of the inside of? I'm...

Well, I got my replacement diodes in the mail and... IT WORKS! Thank you @MattisLind for pointing me in the right direction! To recap incase anyone in the future has this issue: My H7441 power supply would blow the fuse as soon as it was turned on. I found D12 and Q2 were both shorted. I...

Thanks for the replies. I just got a chance to work on this tonight. I was checking Diode D7 and if I'm remembering correctly, it was measuring a pretty low voltage on diode test mode. I wanted to remove it to test it out of circuit. I put a little pressure on the lead to pick it up while...

I measured 54 C on Q5 when I turned it off at 3.9V output. The working supply's Q5 does not get hot even with a .33 ohm load. Both resistors that are close to it measure good. Well, .3 ohm instead of .25 ohm for R5. The good supply also measures that way. Q4 emitter starts at 11.6 V then...

Are you in western PA? I'd be interested in the IMSAI.

Hello, I'm hoping to receive some advice about repairing my PDP 11/34a's 5V power supply. I've made some progress, but I'm still having issues. When I received the machine, the power supply's fuse would blow immediately. I traced this to a shorted D12 and Q2. I replaced D12 with a ues2605r, the...