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Cybernator
Registered: Jun 2002
Posts: 154 |
Keeping my devices in good shape
Hi,
A fellow told me that the belts of my C64 tape/disk drives and printers tend to "break" with time, unless taken care of. He suggested that I apply some silicone oil to the belts. Here's a picture of the stuff he recommends:
Do the belts really deteriorate over time? Is this a good idea at all? |
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Fredrik
Account closed
Registered: Apr 2009
Posts: 204 |
I am wondering about another device. The 1571.
It is getting more and more "buzzing" from the "trafo".
I guess the capacitors needs to be replaiced with new.
Is the buzzing harming the diskdrive? (more and more ac and less and less dc)
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Mace
Registered: May 2002
Posts: 1799 |
If we're talking about decaying hardware in general: my 1571 produces interference, so badly that monitors that are close by start 'waving'.
Probably also a PSU problem... any ideas how to fix that? |
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Comos
Registered: May 2004
Posts: 73 |
Quote: If we're talking about decaying hardware in general: my 1571 produces interference, so badly that monitors that are close by start 'waving'.
Probably also a PSU problem... any ideas how to fix that?
The el. caps may be dry over those years.Try to replace them or change with higher uF value.I have replaced the caps in my Ocenanic,there are two 100uF.When i measured them one has only half of the capacity and the second was in tolerance.But that seems to be normal for the 21 year old drive..:-) But depends on the capacitor manufacturer too.In CBM HW are better parts from those years than in todays PC crap HW especially caps in the PSU's and MB. |
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Fredrik
Account closed
Registered: Apr 2009
Posts: 204 |
Cosmos, after you had replaced the caps in your Ocenanic, did the interference disapeared?
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Comos
Registered: May 2004
Posts: 73 |
Quote: Cosmos, after you had replaced the caps in your Ocenanic, did the interference disapeared?
I haven't checked yet,coz Im doin some modds and maitenance on the drive.The faulty cap I have found during planned replacement. |
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Mace
Registered: May 2002
Posts: 1799 |
How do you measure caps? |
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Fredrik
Account closed
Registered: Apr 2009
Posts: 204 |
I just opened my 1571, and took a picture.
This is the capasitors i will replace
25 V 6800 uF
40 V 4700 uF
You find replacement at:
www.elfa.se
67-788-72: Axiell ellyt 6800uF/25V
67-789-97: Axiell ellyt 4700uF/50V
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Comos
Registered: May 2004
Posts: 73 |
Quote: How do you measure caps?
There are certain devices for measuring.Some multimeters have capacity measiring,but they have a limited capacity.I have one,but this is limited to 22uF.Better device that I have is an ESR tester. |
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Fredrik
Account closed
Registered: Apr 2009
Posts: 204 |
Today, the new capasitors came, and i mounted them.
The buzzing did not dissapear, so that means that it is the transformator that buzz.
BUT the interference almost disapeared completly, so it was not waste of money.
The vertical lines on the blue commodore64-startupscreen where stronger before.
Now it takes 25 years before they must be replaced again :)
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Comos
Registered: May 2004
Posts: 73 |
Quote: Today, the new capasitors came, and i mounted them.
The buzzing did not dissapear, so that means that it is the transformator that buzz.
BUT the interference almost disapeared completly, so it was not waste of money.
The vertical lines on the blue commodore64-startupscreen where stronger before.
Now it takes 25 years before they must be replaced again :)
check the PSU for C64 too or the caps inside C64. |
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