DavidMil Posted August 6, 2017 Share Posted August 6, 2017 I just received a 5200 that I bought on ebay (for parts). It looks like someone without much soldering skill tried to do some sort of modification. I'm not that familiar with 5200 upgrades and I have no idea what this person was trying to do. Some looks very professional (the trace cut under the board), and some looks very amateurish (the wires used and the sloppy soldering on them). Here's what I see: 1st. I see that the trace between C61 and the power in has been cut and a diode installed between them. (see picture 1) 2nd. I see pin 11 of the GTIA chip has been raised. (see picture 2) 3rd. I see a white wire connecting pin 3 of chip A27 to the raised pin 11 of chip A15 (see picture 3) 4th. I see a blue wire connecting pins 1 and 2 of chip A27 to pin 3 of A2 (CPU) note that the pins 1 and 2 on A27 are connected buy a solder bridge. (see picture 3) Whatever this mod is supposed to do, it vaporized some of R53 so it's no wonder that the 5200 won't power up. Someone on the 5200 sight had suggested that it was a factory modification. The trace cut and the diode install may have been, but I've never seen stranded wire with such heavy insulation used for factory mods. Does anyone have any idea what this mod was all about? Thanks, DavidMil Quote Link to comment Share on other sites More sharing options...
CRTGAMER Posted August 6, 2017 Share Posted August 6, 2017 (edited) Not sure if this was it; my 4 port was modded at a Service Center decades back to accommodate the 2600 adapter. WHY ARE THERE TWO SEPARATE THREADS ON THE SAME QUESTION? I've never seen anything like this... http://atariage.com/forums/topic/268577-ive-never-seen-anything-like-this/ Edited August 6, 2017 by CRTGAMER Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted August 6, 2017 Share Posted August 6, 2017 WHY ARE THERE TWO SEPARATE THREADS ON THE SAME QUESTION? Probably because no one in the 5200 Forum (which is slow, really) had any kind of answer after 17 hours. 2 Quote Link to comment Share on other sites More sharing options...
DavidMil Posted August 7, 2017 Author Share Posted August 7, 2017 Probably because no one in the 5200 Forum (which is slow, really) had any kind of answer after 17 hours. Ding! Ding! Ding! That is the correct answer! Tell the man what he won! An all expense paid trip to... The Bathroom! Do not pass go. Do not collect 200 dollars. Sorry, I think I may have had too much to drink tonight. I know I have cause I need to go now. Later... DavidMil 1 Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted August 7, 2017 Share Posted August 7, 2017 (edited) That's some strange mod, the diode looks completely out of place, also the left leg looks like a dry joint anyway. The mess that is the bridge underneath the 74LS00 also looks dry, as for the lifted leg?????????????????????? Methinks he got a diagram from someone and got it wrong, I don't know if there were any different PCB's for the 5200 but I'd bet there was and he's done this mod on the wrong PCB?? The lifted leg just flabbergasts me, I'd understand if it was taking or giving a feed to elsewhere but just lifting it, how electronically can that help? (Take in to account that my electronics is low and rusty.) Edited August 7, 2017 by Mclaneinc 1 Quote Link to comment Share on other sites More sharing options...
DavidMil Posted August 7, 2017 Author Share Posted August 7, 2017 That's some strange mod, the diode looks completely out of place, also the left leg looks like a dry joint anyway. The mess that is the bridge underneath the 74LS00 also looks dry, as for the lifted leg?????????????????????? Methinks he got a diagram from someone and got it wrong, I don't know if there were any different PCB's for the 5200 but I'd bet there was and he's done this mod on the wrong PCB?? First, let me apologize to everyone for that last post. My wife found a wine made from strawberries (which I really like) and she and I drank the whole bottle. Well, mostly it was me, she did have one glass. Anyway, I believe you are right Mclaneinc. I think someone was trying to do a four port mod on this two port motherboard. I'm going to fix it back to its original condition and see what happens. I'll let ya'll (for anyone that doesn't understand proper southern USA English, That's short for 'you all') know. DavidMil 1 Quote Link to comment Share on other sites More sharing options...
1050 Posted August 8, 2017 Share Posted August 8, 2017 Lifted leg is trigger 3 which is the infamous cart pull interlock mechanism on the XL/XE, I installed a switch to do exactly this or put it right which ever I feel like doing. And this is how I can hot plug in MAC/65 at my whim. Interlock defeated looks like this on XL/XE. At any rate It might be handy to NOT have it lock it up just because you want to fiddle with carts on a 5200 - I wouldn't know, I don't run one. 1 Quote Link to comment Share on other sites More sharing options...
Mathy Posted August 8, 2017 Share Posted August 8, 2017 Hello David .... wine made from strawberries ... Never heard of it. But since I like strawberries... Sincerely Mathy Quote Link to comment Share on other sites More sharing options...
Bryan Posted August 8, 2017 Share Posted August 8, 2017 I think these are mostly factory mods for some versions of the 2 port. C014805 Pin Up: http://atariage.com/forums/topic/172321-was-there-a-pal-5200/?p=2135251 Wires on A15,27 http://atariage.com/forums/topic/231588-two-port-5200-video-problem-help/?p=3110214 Also: http://kickass.ddnss.org/html/5200/pics/5200pcb.jpg Quote Link to comment Share on other sites More sharing options...
DavidMil Posted August 11, 2017 Author Share Posted August 11, 2017 Hello David Never heard of it. But since I like strawberries... Sincerely Mathy It's called 'Sweet Bliss' and it's made in either Oregon or Washington state. David Quote Link to comment Share on other sites More sharing options...
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