Faulty Commodore 64?

manic23 · 30 September 2013, 15:50

Sometimes when I turn on my Commodore 64 Bread Bin the Ready prompt does not display and I just see this:

I have to turn off and on, sometimes a few times before it works.

Is that normal, is it something that just happens with C64's of do you think it is a fault?

fitzsteve · 30 September 2013, 15:57

Well it don't happen to my C64 so I guess some kind of fault, the experts will be along soon and give you some guidance

Vot · 30 September 2013, 16:02

Follow advice here on the CIA chips. http://www.lemon64.com/forum/viewtop...31536cef485d95

demolition · 30 September 2013, 16:11

Since it's not always happening, it could very well be a bad connection between a chip and its socket, so I'd first try resocketing all chips in sockets. If there isn't any (or just the SID in socket), then it must be something else.

manic23 · 30 September 2013, 18:16

Thanks for your help guys, I'll try resocketing the chips first and see if that works.

roy bates · 30 September 2013, 18:31

try reseating the roms and cia's

manic23 · 30 September 2013, 19:16

Quote:

Originally Posted by roy bates

try reseating the roms and cia's

I will mate, many thanks

Quagliarulo · 01 October 2013, 01:46

The next thing that should be shown is "38911 BASIC BYTES FREE". Since the number 38911 comes from a memory test, I guess some RAM chip broke. It could also be some glue logic.

30 September 2013, 15:50	#1
manic23 Only Amiga! Join Date: Jan 2008 Location: London / UK Age: 53 Posts: 512	Faulty Commodore 64? Sometimes when I turn on my Commodore 64 Bread Bin the Ready prompt does not display and I just see this: I have to turn off and on, sometimes a few times before it works. Is that normal, is it something that just happens with C64's of do you think it is a fault? Last edited by manic23; 30 September 2013 at 18:21.

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30 September 2013, 15:57	#2
fitzsteve Professional slacker! Join Date: Jul 2009 Location: Kent, UK Age: 44 Posts: 6,683	Well it don't happen to my C64 so I guess some kind of fault, the experts will be along soon and give you some guidance

30 September 2013, 16:02	#3
Vot Registered User Join Date: Aug 2012 Location: Australia Posts: 651	Follow advice here on the CIA chips. http://www.lemon64.com/forum/viewtop...31536cef485d95

30 September 2013, 16:11	#4
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190	Since it's not always happening, it could very well be a bad connection between a chip and its socket, so I'd first try resocketing all chips in sockets. If there isn't any (or just the SID in socket), then it must be something else.

30 September 2013, 18:16	#5
manic23 Only Amiga! Join Date: Jan 2008 Location: London / UK Age: 53 Posts: 512	Thanks for your help guys, I'll try resocketing the chips first and see if that works.

30 September 2013, 18:31	#6
roy bates Registered User Join Date: Apr 2011 Location: birmingham Age: 55 Posts: 2,827	try reseating the roms and cia's

01 October 2013, 01:46	#8
Quagliarulo Registered User Join Date: Mar 2010 Location: Napoli, Italia Posts: 76	The next thing that should be shown is "38911 BASIC BYTES FREE". Since the number 38911 comes from a memory test, I guess some RAM chip broke. It could also be some glue logic.

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