I managed to check all the connections this morning and found that pin 15 (RXW) isn't connecting. It looks like when I removed the existing chip I must have damaged that track
The track for that pin isn't visible so does anyone have any suggestions on how I can repair it?
Cheers
RTC Replacement
Re: RTC Replacement
Proud owner of an Atari Falcon and Atari Jaguar with CD (toilet) add-on.
Re: RTC Replacement
I had trouble with mine and had to nut it out so I listed everything to buzz it out. The trace should run to U24+U52/Pin13 (ACIA). That ground plane is a bitch.
U64/Pin1 Power 5V
U64/Pin2 not connected or not used
U64/Pin3 not connected or not used
U64/Pin4 AD0 <-> U31/Pin41
U64/Pin5 AD1 <-> U31/Pin42
U64/Pin6 AD2 <-> U31/Pin43
U64/Pin7 AD3 <-> U31/Pin44
U64/Pin8 AD4 <-> U31/Pin45
U64/Pin9 AD5 <-> U31/Pin46
U64/Pin10 AD6 <-> U31/Pin47
U64/Pin11 AD7 <-> U31/Pin48
U64/Pin12 GND
U64/Pin13 RTCCS <-> U56/Pin75
U64/Pin14 RTCAS <-> U56/Pin76
U64/Pin15 RXW <-> U24+U52/Pin13
U64/Pin16 not connected or not used
U64/Pin17 RTCDS <-> U56/Pin55
U64/Pin18 is connect to C232, R243 and D11 on the motherboard backside
U64/Pin19 not connected or not used
U64/Pin20 not connected or not used
U64/Pin21 not connected or not used
U64/Pin22 not connected or not used
U64/Pin23 not connected or not used
U64/Pin24 Power 5V
U64/Pin1 Power 5V
U64/Pin2 not connected or not used
U64/Pin3 not connected or not used
U64/Pin4 AD0 <-> U31/Pin41
U64/Pin5 AD1 <-> U31/Pin42
U64/Pin6 AD2 <-> U31/Pin43
U64/Pin7 AD3 <-> U31/Pin44
U64/Pin8 AD4 <-> U31/Pin45
U64/Pin9 AD5 <-> U31/Pin46
U64/Pin10 AD6 <-> U31/Pin47
U64/Pin11 AD7 <-> U31/Pin48
U64/Pin12 GND
U64/Pin13 RTCCS <-> U56/Pin75
U64/Pin14 RTCAS <-> U56/Pin76
U64/Pin15 RXW <-> U24+U52/Pin13
U64/Pin16 not connected or not used
U64/Pin17 RTCDS <-> U56/Pin55
U64/Pin18 is connect to C232, R243 and D11 on the motherboard backside
U64/Pin19 not connected or not used
U64/Pin20 not connected or not used
U64/Pin21 not connected or not used
U64/Pin22 not connected or not used
U64/Pin23 not connected or not used
U64/Pin24 Power 5V
Re: RTC Replacement
Thanks Atari030, all sorted now
Proud owner of an Atari Falcon and Atari Jaguar with CD (toilet) add-on.
Re: RTC Replacement
Thanks to everyone who helped me sort this out, your support and patience is greatly appreciated
Proud owner of an Atari Falcon and Atari Jaguar with CD (toilet) add-on.
Re: RTC Replacement
What was it in the end ?
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Re: RTC Replacement
I screwed the track on Pin 15 Anyway, some enamelled wire and 5 minutes, all fixed
Proud owner of an Atari Falcon and Atari Jaguar with CD (toilet) add-on.
Re: RTC Replacement
This week I'm doing tech support for a CSIRO cluster. I got much more satisfaction in seeing that Falcon working again. Nice one.
Re: RTC Replacement
Switched Falcon on today, and it doesn’t boot
This is all I get...anyone got any ideas?
This is all I get...anyone got any ideas?
Proud owner of an Atari Falcon and Atari Jaguar with CD (toilet) add-on.
Re: RTC Replacement
Never seen that one before like its in some test mode or something. Is the floppy light still flashing ?
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
- Cosmic Puppet
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Re: RTC Replacement
Love that screen colour!
US Atari 520 STFM (C070523-001 REV.D1) , Exxos PSU, 4MB Marpet Upgrade, Exxos 6 Chip TOS 1.04 USA, EmuTOS 20211020, Ultrasatan, PP Driver, Original Floppy Disk Drive, NEC Multisync EA193Mi Monitor, Star LC-10c Printer, iMP C100110-001 DMA.