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RS03 - some photos of the cards on the inside

I looked at the Service Manual, and am really surprised that this is a Massbus device. It would plug right into the RH11 controllers in my KS10. Any PDP-11 with an RH11 controller should be able to use the disk.

The motor-run cap for the blower motor is probably bad. A replacement should be easy to find. Make sure you get a motor-run cap, not a motor-start cap.

Some silicone should be able to seal up damaged parts of the HEPA filter enough to try the disk.

There are M7753 and M7754 modules on eBay.
 
m_thompson said:
I looked at the Service Manual, and am really surprised that this is a Massbus device. It would plug right into the RH11 controllers in my KS10. Any PDP-11 with an RH11 controller should be able to use the disk.
Click to expand...
I am lucky enuf to have an RH11 for the monster!

m_thompson said:
The motor-run cap for the blower motor is probably bad. A replacement should be easy to find. Make sure you get a motor-run cap, not a motor-start cap.

Some silicone should be able to seal up damaged parts of the HEPA filter enough to try the disk.

There are M7753 and M7754 modules on eBay.
Click to expand...
I undertstand the differences in the caps - so I will get the right ones.

The HEPA I have is not damaged BUT the manual is pretty adamant not to use it again. I was going to try the "reverse sook" outlined elsewhere the forum, but is seems a pity to damage a good platter by messing with the filter? Advice welcome as I have never done this sort of engineering/butchering before. The filter is back in place for now - more to stop the ingress of rubbish than anything else. I wont be spinning things up for while yet. I need to pull the boards and check em out as best I can. I see the benkle (I guess heat rising from the board below?) on the backplane.

I had not noticed the 7753/54 on ebay - ta
 
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