Posted By
Patrick
on 2005-07-17
13:14:12
|  what is wrong with my 1551?
i tried to get the directory of a disk, but the only thing i get on the screen, after a lot of noise out of my drive, is: ready. NO DIRECTORY!! what is wrong???
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Posted By
JamesC
on 2005-07-17
15:47:51
| Re: what is wrong with my 1551?
Does the disk drive light blink? If so, how many times, or continuously?
If you have a continuously blinking drive light, type PRINT DS$ and the drive will tell you what the problem is.
I suspect the disk is missing, not formatted, inserted upside down, or the directory is not readable for some reason. The computer goes to READY when the drive releases the bus, whether the computer receives any information from it or not.
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Posted By
Patrick
on 2005-07-24
16:58:21
| Re: what is wrong with my 1551?
the light keeps on blinking. the drives tells me: 27, read error, 18, 00
what can i do to fix it? there is nothing wrong with my disks!!
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Posted By
JamesC
on 2005-07-24
20:50:19
| Re: what is wrong with my 1551?
Clean the disk drive head. While you're at it, lubricate the rails that the head mechanism ride on. The 1551 is constructed similarly to the 1541 so any guide on how to do these for the 1541 would be suitable.
In short, the 1551 is either misreading (or can't read) the sync bytes of the header for track18 sector 0. Therefore the 1551 thinks it has bad data or a bad disk.
Alternately, the ground (earth) line could be bad. Do other earthed appliances or electronics work in this outlet or with this power cord? (Another 1551, a 1541, a 128D?)
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Posted By
Patrick
on 2005-07-25
06:15:37
| Re: what is wrong with my 1551?
thanks jamesc for the help. last night i tried and i tried and now he is working again!!! i didnt do anything special. hopefully he will keep working like this. so u sure, that there is nothing wrong with the drive? i have 2 and both had the same problem!!!!!
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Posted By
Chris
on 2005-07-25
07:50:35
| Re: what is wrong with my 1551?
Thats brilliant news  Would be a shame to see a 1551 die on us.
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Posted By
Patrick
on 2005-11-22
03:30:06
| Re: what is wrong with my 1551?
shit, shit, the same problem is back again........i tried everything again...but......nothing HELP!!!!
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Posted By
SVS
on 2005-11-22
05:56:57
 | Re: what is wrong with my 1551?
@Patrick:
1) With all devices turned off, detach the cartridge-connector from back of Plus4, clean its contacts (and port contacts on Plus4)
2) Reinsert the cartridge-cable as well
3) Turn on the 1551 and wait until the red LED turns off
4) Turn on the Plus4 and wait until the 1551' motor tuns off
5) Insert a *surely* good disk (well working in a 1541 for example)
6) Type DIRECTORY or [F3]
Wait for your reply, then we can proceed with more tests.
Bye
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Posted By
Me
on 2005-11-23
01:11:12
| Re: what is wrong with my 1551?
Clean the contact strips on the Plus4 board on the back. They do build up crud and oxides (even if they look shiny and clean). Use alcohol and a swab to clean both sides. Then use a strip of clean typing paper to wipe and genlty buff the contact strips. Removing the crud has fixed more "bad" interface connections on the 1551 and Datassette connectors than you can shake a stick at...
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