Recent content by chaolizi

Ya, it does feel great! It is even better that I found this community! :)

Thanks! Ya, as I took apart it I was quite amazed by the quality of the chassis and boards, but to be honest, took it apart was a job, especially to get the FDDs, it was scary to lift the entire internal out of the case with every bits squeezing hahaha. Ya, ebay nowadays is nuts, but almost...

Oh, and here is a shot of the interesting female FDD connector coming out of the power plug panel and there is no twist on the cable which makes me think someone made this out of an FDD extension cable and decided to mount the female connector there :)

Oh buddy, I can't thank you enough!!! I did the test, and guess what, all the pins on the board were short, the cable was indeed reversed!!! I took another look at the cable and it seems to be a PC FDD extension cable with 5.25 FDD connectors on it, and that's why it has the strange female...

Ya, it looks like a regular 5.25FDD with the big 4 pin power supply. The unit has definitely been took apart, seller said it works 20 years ago, but I will check with a multimeter regardless haha. BTW, should I check on the FDD end or the board end though? If the drives are good, I unplug it...

Thanks for the advice! Ya, after re-clean all the sockets and reseat all chips again, I'm pretty sure something on the board is acting up and I also highly suspect the FDD control chip now, I saw there are some ram for the FDD, but I feel those have nothing to do with turning drives on/off or...

Thank you! Indeed, this is a very nice unit, the internal board looks mint, screen bright and sharp, the outside after a little cleaning looks almost new (not even yellowed)! I have been looking for these models for a long time and really want this one to work as original, otherwise, I will gut...

Emmm, that's a good point, but from the shape of the cable, and the way it has hardened, it looks like to be that way for decades, but I will definitely double-check today. Btw, will there be any physical damage if the ribbon was reversed? Based on my experience with other old PCs I don't think...

Okay, some progress. After some playing around, it was one of the 4 2128 video ram chips, it wasn't bad, I just unplug and pug them back in many times and now it works! The system passes self-test and beeps! But the floppy drives still spins as soon as I press on the power button. So at this...

Hi, Alex, thanks for the reply. I suspect the ram as well, but the problem is I don't have a ram tester. and this issue seems not very obvious which part of ram it is related to. Since the 0s are only half screen, maybe video ram? and any ram tester to recommend for this particular machine? Cheers!

Hi, I'm new to the group, so correct me if I do something wrong :) Long story short, I got an excellent condition Osborne Executive, the only issue is, it has errors. The machine will power fine, but: 1. when power on, both floppy drive goes on and keeps on and spinning. (LED keeps lit) 2. On...