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#41 |
Registered User
Join Date: Sep 2019
Location: Rijeka, Croatia
Posts: 11
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Chips was ok.
When i bought this Amiga sockets was already installed. So with help of Amiga PCB explorer web page manage to found that pin 7 on U19 does not have proper connection so i used jumper wire to fix issues and it worked!! |
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#42 | |
Registered User
Join Date: Jun 2020
Location: Germany
Posts: 1
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Quote:
I also had pin7 of U19 without proper connection! Also had to use jumper wire to fix it... is that just a coincidence? |
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#43 |
Registered User
Join Date: Sep 2020
Location: Prague, Czech Republic
Posts: 1
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Hi,
I have the same board revision. I'm wondering if this board supports Chip RAM expansion cards similarly to the full A500+ or what is needed for that? Is the logic chip (U35) required so that expansions can be used to extend Chip RAM? The reason I'm asking is I'm not that confident with my soldering skills so would like to minimize the soldering needed. Specifically if I can get by without soldering the extra RAM chips and end up with 1,5MB Chip using just an expansion that would be sufficient for my needs. Thanks a lot! |
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#44 | |
Registered User
Join Date: Oct 2009
Location: Italy
Age: 45
Posts: 196
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Quote:
Hi,please re-upload this pics! not available. Last edited by danko; 06 December 2021 at 12:23. |
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#45 |
Registered User
Join Date: Feb 2020
Location: Abu Dhabi / UAE
Posts: 14
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Hello all
pulled out my A500 rev 6a board out of hiding and considering of making the board an a500 plus. suggestion's? |
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#46 |
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Join Date: Jul 2003
Location: Helsinki / Finland
Age: 44
Posts: 9,958
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My suggestion is to get a 2MB Chip expansion that plugs into the Agnus socket and a Denise HR. Less hassle than trying to make an A500+ out of a Rev 6.
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#47 |
Registered User
Join Date: Feb 2020
Location: Abu Dhabi / UAE
Posts: 14
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silly question: i am thinking of upgrading the memory on the motherboard. what is the voltage for the capacitors (c16 - c23) the markings are A5E 334 Zaa 104. the only thing in my search shows 50v but i am not sure,
besides the ic chips and the caps is there anything else that needs to upgraded? a500 rev 6a |
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#48 |
Registered User
Join Date: Feb 2020
Location: Abu Dhabi / UAE
Posts: 14
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#49 | |
Registered User
Join Date: Jan 2015
Location: australia
Posts: 585
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Quote:
It is usual for bypass caps (104 = 0.1uF) to be rated to 50v, they will work fine. As far as attention to detail when refurbishing these caps, try to find ones with the same lead spacing to suit the PCB thru-holes... Jope's right btw ~ better to go that route imho. |
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