Question PS2 portable no boot - asking advice:)

[Accelerando]

Hello, I am building a PS2 portable (following customledmods build with a 5" display)

I had no issues until the point that I installed the sticks into the controller board (one of the open source PS2+ boards, sourced here on bitbuilt)

I connected the joycon in reverse polarity (as directed, considering the joysticks' orientation) and upon doing so, the PS2 no longer posts. Powering on the ps2, my display turns black and will stay black until I hold reset again to "power it off" even after disconnecting the sticks, and the controller board assembly, from 3.5v.

I suspect it's cooked, but advice or suggestions would be nice though, in the case that there's something I dont know about to force this thing back to life

 

[Legend]

Do you have any dead shorts on any of the voltage rails?

 

[Customledmods]

Post pictures whenever you get a chance

 

[Accelerando]

Do you have any dead shorts on any of the voltage rails?

I do not

Post pictures whenever you get a chance

I will post some photos after I get off of work

 

[Accelerando]

Here is a photo of the controller board, and a photo of my voltage lines-- I apologize if it isn't super coherent, my routing isn't where I would like it to be just yet and it shows


For reference, the trim worked perfectly fine -- even with sticks installed -- UNTIL I reversed polarity (wired them normally and they were backwards, went back to customledmods' worklog to make sure I wasn't insane)
So I know these things:
The controller wiring was correct to the PS2, all of my original Voltage lines were fine, and everything went to shit only after reversing polarity of the sticks????

 

[Customledmods]

In my build I used a cheap 3rd party controller with no issues, I hope by you using ps2+ didn’t cause these issues.

I would disconnect all controller wires for now and check continuity on ps14, I had a ps2 that wouldn’t boot and ps14 was the cause.

 

[Accelerando]

In my build I used a cheap 3rd party controller with no issues, I hope by you using ps2+ didn’t cause these issues.

I would disconnect all controller wires for now and check continuity on ps14, I had a ps2 that wouldn’t boot and ps14 was the cause.View attachment 43303

That could make a lot of sense! If what I'm reading is true..it's a 2a/50v fuse. I probably broke it when I reversed the polarity to the sticks. LOL.

Furthermore, it seems like others online have the issue of the ps2 powering on, but not showing any video when this fuse dies.

I'll check when I get home from work, for sure, but in the meantime I went ahead and ordered some from console5. Thank you!

 

[Customledmods]

Reversing the polarity on the sticks might only work on that 3rd party controller I used and not the ps2+, since I’ve never used the controller you are using I can’t confirm for sure.

 

[Legend]

I'd be curious to know what kind of sticks your using as typically reversing the polarity on analog sticks that use 10k potentiometers shouldn't cause issues so long as your just reversing polarity on just the sticks! If you could show us what sticks your using when you get the chance, that would be awesome!

Hopefully your issue is just a blown fuse but definitely test any component thats labelled "PS" with whatever number follows it as they are all fuses iirc! Worse comes to worse given everything is still functioning, you may just have to find different sticks to use!

 

[Accelerando]

I'd be curious to know what kind of sticks your using as typically reversing the polarity on analog sticks that use 10k potentiometers shouldn't cause issues so long as your just reversing polarity on just the sticks! If you could show us what sticks your using when you get the chance, that would be awesome!

Hopefully your issue is just a blown fuse but definitely test any component thats labelled "PS" with whatever number follows it as they are all fuses iirc! Worse comes to worse given everything is still functioning, you may just have to find different sticks to use!

They're hall effect joycon sticks (not any particular brand, just the highest rated I could find on ebay ) here is a photo from the listing, as it's accurate to the ones I received.

Haha, I'm hoping as well, and I will check them all. I'll probably just flip the orientation of the sticks... It should do the same as what reversing the polarity would have done. Either way, I appreciate all of the advice!! It's definitely calming my nerves and I look forward to building more portables (and finishing this one!) With all of this in mind.

 

[Legend]

That is most definitely the issue! All hall effect joysticks have some version of circuitry with little IC's in order to get the polarity of the magnets! So when you reversed the polarity of the sticks, it was actually shorting them out.

If that is the case, there almost definitely is a blown fuse on the PS2 as the 3.5v rail was shorted when trying to swap polarity.

Hopefully its okay and just a blown fuse but I would also verify that your controller board is still functional once you have it working again!

 

[Accelerando]

That is most definitely the issue! All hall effect joysticks have some version of circuitry with little IC's in order to get the polarity of the magnets! So when you reversed the polarity of the sticks, it was actually shorting them out.

If that is the case, there almost definitely is a blown fuse on the PS2 as the 3.5v rail was shorted when trying to swap polarity.

Hopefully its okay and just a blown fuse but I would also verify that your controller board is still functional once you have it working again!

Ah! That's really interesting, and in retrospect I should have considered the difference between standard pot sticks and hall effect sticks before playing with voltage polarity. This is definitely one way to learn though! I'll scope out the dead fuse(or fuses) and of course check my controller board after I'm done. Luckily, I've got a few spares I can flash and swap out for in a jiffy

 

[Legend]

The best way we learn is through our mistakes! I hope everything is working for you at the end of the day!

 

[Accelerando]

alrighty! I am home now...and I see ps14, ps11, ps7, and ps1, so I checked them all....they all have continuity to their other side

 

[Legend]

Big oofs have you tried testing each voltage rail with a multimeter while its on to make sure the PSU is outputting all proper voltages?

 

[Accelerando]

Big oofs have you tried testing each voltage rail with a multimeter while its on to make sure the PSU is outputting all proper voltages?

I just sanity checked again...all voltages are as stable as they've been, even checked voltage across the aforementioned fuses and...yep,
Ps14 gets 3.5v,
Ps7 got a few hundred mv
Ps11 got 5.5v
I can't really tell which chip ps1 is? There's not really anything around the label, So I couldn't really discern a reading, if it's even present lol.

 

[Customledmods]

I would disconnect the wires on the ps14 fuse and check again, also here’s the ps1 fuse

Also can I get some clearer photos top bottom of motherboard, and how are you powering this ?

 

[Accelerando]

I would disconnect the wires on the ps14 fuse and check again, also here’s the ps1 fuse

Also can I get some clearer photos top bottom of motherboard, and how are you powering this ?
View attachment 43324

Still had continuity between ps14 after removing my wiring, however I'm not sure how I'm powering this chip (I haven't messed with it up until now, even when my PS2 was booting normally LOL.)
I did check this chip though and there is continuity between it, but the voltage is similar to ps7, reading ~ a couple hundred mV

 

[Customledmods]

Did you check the ps1? And what exactly happens when you hit that reset button ?

 

[Accelerando]

Did you check the ps1? And what exactly happens when you hit that reset button ?

yes I did, sorry if I wasn't clear enough LOL. It has continuity and a few hundred mV when reading voltage.

Ever since I swapped polarity on the hall effect sensor, pressing reset kicks the console on (I can feel the chips get warm, and hear a little sound from the board,) but it's just a black screen until I hold reset again to power it off.