QUME 142 in IBM 5155 - one works, one doesn't

[pearce_jj]

Evening all

I thought drive 'B' on my 5155 had been broken (it stopped working after using rawrite) but in a more modern machine both drives work fine. Back in the 5155, drive A (DS1, with terminator) works OK while drive B (also DS1 [twisted FDD cable], no terminator) just gives continual sector not found or data error messages.

Any thoughts greatly appreciated. I've lubed the rails (heads can be easily moved through the entire length of travel) and cleaned the three optos.

Many thanks!

 

[modem7]

B: drive connector on cable? What happens if you swap the drives (also moving terminator to new A: drive)?

 

[pearce_jj]

Thanks - tried this and guess what, they both work fine! Who knows, but that's good enough for me