Recent content by Avernus

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    Saturn VA0 PAL control port issues

    Ah yea, these things happen. The board i have was an ebay sale with reported display problems. Someone messed up the 60hz mod and pulled the 5v and signal pads from the board. Got that fixed, then found the first port had barely enough to power the adapter and 3d controllers. After a clean and...
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    Saturn VA0 PAL control port issues

    Right, I've linked the two points JP14 JP15 with a small wire for now, and replaced the caps noted above. The ports are now both able to power up the Brook SD adapter and respond to D-pad and buttons ok while in analog mode. I'll replace the jumper wires with 0-ohm resistors and likely do the...
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    Saturn VA0 PAL control port issues

    Here's another iterative report of findings thus far, and another place for others to check. There are two points JP14 JP15 that are not reading as bridged as i would expect, something there maybe but very intermittent at best. ChronoLe, If you're looking for a fuze, 'FB-##' is what to look...
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    Saturn VA0 PAL control port issues

    Aw noe! what happened? I almost saw my SG/MD go up in flames the other day due to a bad VReg. Had a lot of audio buzzing noise when text covered the screen and such for some time. Ordered a cap and Vreg set for the two 16bit systems. VReg went critical during play and luckily the ups cut out...
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    Saturn VA0 PAL control port issues

    Found a few crapacitors at ce48 22 23 with not much to say for themselves. Check these and see if we have a match. I'll throw some replacements in and report back when practical. Oh fek! it appears Console5 has messed up this bag of trix. Missing 2x 1uf 50v smd and has a few extras that go...
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    Saturn VA0 PAL control port issues

    Hi, sorry I've been away for a while dealing with other things. I'm going to have another look at this board while i wait for a few components for an xbox console. The second controller port now has the same issue for this board, I'll report back if i find anything under the mask.
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    Saturn VA0 PAL control port issues

    Ok well, i've replaced the set for port #2 only at this time. Good news is, no smoke and flames! Status led's have more intensity than before. digital pad still works ok. Always fun to restore save and clock settings. As always there's no news like bad news so. I tested the pins for port #2...
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    Saturn VA0 PAL control port issues

    I have the parts now, I'm goin' in! I'll let you know the results. As for the voltage readings, it's likely the drop was potentially caused by the faulty part still in circuit. And due to the way some of the pins are wired, isolating all of those in series would be required to get a more...
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    Saturn VA0 PAL control port issues

    Interesting question! Due to my limited knowledge of how the chip behaves, I wouldn't expect the readouts to be any different, as the chip itself may have no reason to provide any more than the controller needs. The question then becomes, what does it think it sees here? and what is it...
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    Saturn VA0 PAL control port issues

    Thanks for the information guys, much appreciated. I'll give these alternatives a shot and let you know how the story ends.
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    Saturn VA0 PAL control port issues

    I probed both ports on via TP34 through 25 directly, readings were similar at the controllers pcb pin also. With digital controller, Voltage was around +1v with some variance. And dropped with time after disconnection, as expected. With the wingman sd, Voltage gradually increased to a level...
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    Saturn VA0 PAL control port issues

    Bypassing them has been a consideration for sure. Due to the strange problem i have with analog controllers or other devices like the wingman sd adapter, I can only presume that the SMPC chip is simply not 'seeing' a signal it expects (due to fluctuations) for peripherals like analog...
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    Saturn VA0 PAL control port issues

    Alright I've scanned the board with a scope to get a more accurate picture of the issue. There is a row of emi filters near both control ports which appear to be the main cause for this problem. Does anyone know of a source for these ? "Taiyo stb101kb" is the part name. Taiyo appears to...
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    Saturn VA0 PAL control port issues

    Hi there. I have a Saturn Model 1 VA0 PAL console here with an interesting problem quite similar to the thread created by Eidolon_NG. The control ports presumed to have an issue with power output to the pins. Capacitors for CE47,CE48 have been replaced. Here is a summary of a few tests using...
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