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Forums > CSDb Discussions > 1541-II read problem
2013-01-24 15:18
logikstate
Account closed

Registered: Jan 2011
Posts: 21
1541-II read problem

Is this the right place to post this? Anyhoo, here goes:

I have a whole bunch of 1541's and one 1541-II

I've used an alignment disk and re-aligned the heads and generally cleaned up one of the 1541's and it can format and read back disks and read an original disk I have here without problems.

As for the 1541-II, I cannot read anything on it reliably... Even after cleaning the heads etc... If I format a disk and read it back, there are errors. If I try to read the same original that works on the 1541 there are always errors.

But... If I format a disk on the 1541-II, I can then read it on the 1541 I've cleaned up without problems.

So, the question is, what might be the problem with the 1541-II? I'm kinda baffled at the moment... Was hoping that somebody with a little more knowledge than myself might be able to suggest something I could try.

Thanks in advance for any help and advice!
 
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2013-01-25 10:42
logikstate
Account closed

Registered: Jan 2011
Posts: 21
I'm reading 7.2v off the 5v line whilst its under load, connected to the 1541-II via probing the back of the power connector... I'm also reading 12.3v of the 12v line... I guess that's possibly ok? the 5v is WAY out though!

I guess its the PSU then!
2013-01-25 10:46
ready.

Registered: Feb 2003
Posts: 441
12.3V should be ok, but those 7.2V on the 5V line is way too much. Yep, PSU is gone.
2013-02-20 00:06
maestro

Registered: Mar 2004
Posts: 723
i just made my own psu cost £10 and about 30 mins of work. 1541-2 has been superb ever since.
2013-09-10 11:13
HCL

Registered: Feb 2003
Posts: 727
Quote: i just made my own psu cost £10 and about 30 mins of work. 1541-2 has been superb ever since.

Very interesting.. I currently have 2 drives, but only one PSU which seems to be worn out now :(. Any chance you could explain how you made your own? What components did you buy etc..

Other ways to get a working PSU are also very welcome..
2013-09-11 11:23
Frantic

Registered: Mar 2003
Posts: 1641
EDIT: Nothing
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