Just opened my old pc. From first looks, is there something missing??
Posted by Acceptable-Travel380@reddit | vintagecomputing | View on Reddit | 26 comments
Posted by Acceptable-Travel380@reddit | vintagecomputing | View on Reddit | 26 comments
Hipokondriak@reddit
One thing noone has mentioned (that I can see), is that on those old computers, they have a built in anti sag card support at the back of the slot-in cards. The old slot-in cards were so long, that they had to support them or they would sag. This is relevant today, because nearly all high end gpu are getting so long that we now have an aftermarket demand for supports for them. Just goes to show that those early computer manufacturers knew something that got dropped in the name of economy
Acceptable-Travel380@reddit (OP)
I eventually fixed it, added a 1.44M floppy drive but ig it cant read 1.44M. I tried over 30 floppys, neither worked. Ill just buy a 5.25
the_scruffy1@reddit
the 21st century
techika@reddit
I think , that missing safety caps on eproms
SoftRecommendation86@reddit
The chip windows need to be covered..... or they will self erase....
Acceptable-Travel380@reddit (OP)
Thank you all for helping, I fixed it
Illustrious_Prune_29@reddit
I can’t see a multi I/O card.
Matt3141592@reddit
A good cleaning!
Baselet@reddit
Oh yes, I'd love to go through this buried beast!
YogurtclosetOwn5322@reddit
Looks like that old motherboard does not have built on video, so that is probably missing the video card that used to be in one of those ISA slots.
WingedGundark@reddit
Video card is clearly seen in the second photo, the rightmost card is the video card. It is likely a CGA card, EGA is unlikely. The SMD chip is the CRTC controller chip.
YogurtclosetOwn5322@reddit
I wouldn't say the image was clear, but you are right. It happens to be one of these Yamaha V6355 chipset video cards that I had to do some digging to find.
https://theretroweb.com/expansioncard/image/acv-1030-front-300-68d9803b99e68290104747.png
WingedGundark@reddit
Good find. There are bunch of tose VIP stamped CGA cards out there, I have one NOS in box, but it is not the model shown in this picture. There are also very similar SMD CRTCs made by other companies on many cards.
That CRTC chip and ViP were the revealing features to me. It also isn’t EGA card, because these short later EGA cards tend to have very different layout and more memory chips.
maokaby@reddit
There was one more ISA card, that's why back cover is missing.
commodore-amiga@reddit
Intel Above Board ;)
Acceptable-Travel380@reddit (OP)
I found out that it's a 80286 pc. It should have everything, I just need a floppy disc with like DOS or smth.
InsaneGuyReggie@reddit
WinWorldPc
Agitated_Show_9688@reddit
A duster
Acceptable-Travel380@reddit (OP)
Yes, that's why I opened it. But in my last post here I had an issue with thr pc
Agitated_Show_9688@reddit
Where's the monitor plug in?
GGigabiteM@reddit
The last short card on the far right. Probably a CGA/EGA card with analog output.
Agitated_Show_9688@reddit
I'd do a visual inspection first. Mostly the capacitors, and one of the chips on the last card looks to have a brown pin, wonder if it has a) continuity b) actually has a function
jdx6511@reddit
Not that they're likely to see much UV inside the PC case, but the BIOS EPROM chips with the round windows should have stickers covering their windows.
Low-Charge-8554@reddit
Yep - looks like an empty socket for a 80287 Math Coprocessor. Very cheap: https://www.jameco.com/z/D80287-8-Intel-Corporation-80287-Math-Coprocessor-8-MHz-DIP-40_2344671.html
Useful_Resolution888@reddit
Is that number next to the blue socket 80286 or 80287?
AdventurousEye8894@reddit
PC