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Damn it .. dead PSU (now working!)

Posted: Thu Feb 20, 2014 8:35 pm
by Mug UK
I was talking to Brume earlier and he gave me the impetus to dig out the Kryoflux and get it all set up again.

However, after an hour of puzzlement, I've come to the conclusion that the PSU is a duffer.

I've found this: http://www.ebay.co.uk/itm/320705061184? ... 1438.l2649

Has anyone had any similar luck replacing the Kryoflux PSU with a cheap eBay one (purely as a temporary measure)?

Re: Damn it .. dead PSU

Posted: Thu Feb 20, 2014 9:17 pm
by Mug UK
Took a gamble and ordered one. At least this way I will hopefully be able to make a start on the non-original disks. Forgot I had *so* many PD disks/demos/source code.

Re: Damn it .. dead PSU

Posted: Thu Feb 20, 2014 11:04 pm
by DrCoolZic
Interesting ... guess what also had problem powering my Floppy Drive ...
For sometime I had the following setup: inside an old pc I have placed a floppy drive powered by the PC and connected it to my KryoFlux board

Then came my SuperCard Pro so I kept my PC open and connected the drive to KF or SCP not very practical ...

So I decided to go for a more practical setup first I found a second drive so each board has its own drive but came the problem of the power supply for the drives.
With the SCP board I was able to connect the 5v of the drive directly on the SCP board and have the board + the drive powered directly by the USB connection (500 mA)
Then I tried the same with the KF board but I could not make it work reliably (see http://forum.kryoflux.com/viewtopic.php?f=3&t=782)

Finally I have found a dead external HDD the disk was dead but not the power supply
So I took a FD/HDD cage that I have cut from an old pc placed this on top of the dead external HDD and connected the two floppy drives to this power supply.

Then using double sided tape I have placed the two enemy cards on top of the upper floppy ...

well difficult to explain so here are some pictures

power2.jpg

power.jpg

side.jpg


Not very clean but woks :)

Re: Damn it .. dead PSU

Posted: Thu Feb 20, 2014 11:07 pm
by DrCoolZic
By the way I forgot to mention that for the 3.5 drive you do NOT need the 12V only the 5V is used so you could go for a simpler PSU but I like the one you have found.

Things to know a 3.5 drive draw about 400 mA operating
see for example
http://www.datasheetarchive.com/dl/Data ... 050111.pdf

Re: Damn it .. dead PSU

Posted: Fri Feb 21, 2014 7:12 am
by Mug UK
Cheers for the info DrCoolZic.

Mine is sat on top of an old 5.25" caddy. Inside the caddy is a combination 5.25" and 3.5" drive. I've also got a 3" drive to use with it as I've got an old Amstrad 6128 in one of the cupboards and that's got a lot of originals and data discs that need backing up.

Re: Damn it .. dead PSU

Posted: Fri Feb 21, 2014 9:56 am
by exxos
I brought 2 of those PSU's a couple years ago, I couldn't use them as the mains plug wouldn't physically fit correctly in the connector :( So if its the normal 3 pin plugs on it, if its a sloppy fit then be careful... I did buy another similar type and the plug wouldn't physically fit, the socket was a fraction to small.. Hopefully there are better now though.

Re: Damn it .. dead PSU

Posted: Fri Feb 21, 2014 11:44 am
by DrCoolZic
exxos wrote:I brought 2 of those PSU's a couple years ago, I couldn't use them as the mains plug wouldn't physically fit correctly in the connector :( So if its the normal 3 pin plugs on it, if its a sloppy fit then be careful... I did buy another similar type and the plug wouldn't physically fit, the socket was a fraction to small.. Hopefully there are better now though.


You mean the cables that plug to the wall?
I would have thought they come with the PSU

There is actually one with a molex eu http://www.ebay.co.uk/itm/HDD-POWER-SUP ... 4aab82e148
and one with a molex uk http://www.ebay.co.uk/itm/HDD-POWER-SUP ... 4aab82e140

Re: Damn it .. dead PSU

Posted: Fri Feb 21, 2014 11:48 am
by DrCoolZic
I have asked the vendor to see if the main plug is provided

Re: Damn it .. dead PSU

Posted: Fri Feb 21, 2014 1:40 pm
by exxos
Not the wall plug, the "kettle" style plug which plugs into the PSU. I have had one PSU with a sloppy fit that it arced so bad it blew the PSU up, then at some point after I had the problem where the plug would not physically fit into the PSU. They were both those small types from what I remember. If Mike says there fit OK then I will probably get one too ;)

Re: Damn it .. dead PSU

Posted: Fri Feb 21, 2014 1:44 pm
by Mug UK
I tried a spare "kettle" lead with my drives. No juice so that's why I've ordered the replacement PSU plus some extra molex leads to play safe :-)



Sent by my Note III

Re: Damn it .. dead PSU (now working!)

Posted: Mon Feb 24, 2014 9:00 pm
by Mug UK
New PSU arrived today (plus some spare molex floppy power leads as I'd broken the other two!) and it's all working fine.

Just trying out "normal" disks first and then will start on the "big box of loose original disks that I really should have started on last year before I moved house" :)

Re: Damn it .. dead PSU (now working!)

Posted: Mon Feb 24, 2014 9:46 pm
by DrCoolZic
Mug UK wrote:New PSU arrived today (plus some spare molex floppy power leads as I'd broken the other two!) and it's all working fine.

Just trying out "normal" disks first and then will start on the "big box of loose original disks that I really should have started on last year before I moved house" :)

Great :)
Would be nice if you could share images with interesting protections ;)

Re: Damn it .. dead PSU (now working!)

Posted: Mon Feb 24, 2014 9:49 pm
by Mug UK
Oddly enough I've just created a Kryoflux folder in one of my cloud accounts. Uploading the MFM + Stream images I did last year first but currently imaging up Hewson's Premier Collection 2 (Backlash, Mercenary, Custodian & Elimibator).

Sent by my Note III