[Coco] Resurrecting a CoCo (26-3001) with a 26-3029 FDC.

[Mike Pepe]

Try cleaning the edge connector contacts with a pencil eraser.

> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-
> bounces at maltedmedia.com] On Behalf Of Ryan Pritchard
> Sent: Sunday, August 24, 2008 7:54 PM
> To: coco at maltedmedia.com
> Subject: [Coco] Resurrecting a CoCo (26-3001) with a 26-3029 FDC.
> 
> Hello out there,
> 
> Newby to CoCoList and to running a CoCo, but not OS-9 which I am
> looking forward to running the NitrOS-9 flavour.
> 
> Fourth attempt to post but this time it should work thanks to Dennis
> telling me some information about the mailing list server.
> 
> 
> I have recently got the bug to play with a CoCo I had acquired years
> ago.  The good news for me, is the 26-3001 model I have is the
> Revision E mother board which has all the jumpers on it to go all the
> way up to 32K (and likely 64K since I know the 64K x 1 chips I have
> are all good as they are coming from an Apple 80 Column card.
> 
> Currently the CoCo has 16K in it, and boots up to Color Basic 1.1.  It
> has an empty ROM socket where if I have understood correctly I could
> install and Extended Basic ROM if I had one.
> 
> I am having a problem getting the Disk Basic on the 26-3029 FDC to
> boot, and thus cannot format or other wise do anything disk related.
> Is there any common issues with the FDC that I should look at to
> determine why the CoCo is not detecting the cartridge and booting from
> the FDC ROM?  The PCB for the FDC has the markings LEIA MV-1 38 84,
> and has the WD-1773-PH controller chip.  The markings on the ROM are
> TMS4764-30NL, B8428L, ZA64342, 804-5364A.
> 
> It does not appear visually to have any burnt caps, resistors, or
> chips, though I have not tested any of them.  Also I have tried the
> time tested eraser on the contacts to see if that would resolve the
> problem, though I have not fully inspected the slot on the CoCo.
> 
> Like many people before me, playing with a CoCo for the first time in
> their lives, help would sure be appreciated.
> 
> Regards,
> 
> Ryan Pritchard
> Fun Extends All Basic Life Expectancies
> 
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