Rvl pms 2 powers on for second then turns off.

[comer.matthew96]

Hello all,
I am currently building an n64 portable using the rvl pms 2. However every time I try to power it on it turns on for a second then right back off. I wired up batteries to positive and negative and the usb c to charge and ground. Lastly I wired the power switch to the power button and ground. What am I doing wrong? Any help appreciated.

 

[VariablePwn]

Photos are a great way for us to help diagnose the issue. Are you able to attach some?
(PS, you can resize the photos in your post if they are too large)

 

[comer.matthew96]

Photos are a great way for us to help diagnose the issue. Are you able to attach some?
(PS, you can resize the photos in your post if they are too large)

Are these adequate?

 

[VariablePwn]

Looks like you're missing a couple of 3v3 points being wired up.
You need to connect all 3 of the individual 3v3 points on the N64

 

[comer.matthew96]

Do you have a link? From what I could find there was only one 3.3volt wire on the n64.

 

[VariablePwn]

Do you have a link? From what I could find there was only one 3.3volt wire on the n64.

Thread 'The Advanced N64 Trimming Guide'

Dec 19, 2020

Preface​

This guide can be used on any NTSC N64 motherboard. The trim line is slightly different between board revisions however the relocations will be roughly the same. At first glance the trim might seem more daunting due to the PIF relocation but this actually simplifies the relocations to ensure that all the essential traces and components are reconnected. This also creates a universal relocation method between all the motherboard revisions. As the title says, this trim is an advanced level trim which should be performed by experienced modders to...

• BitBuiltBot

• 
• 

 

[comer.matthew96]

Thread 'The Advanced N64 Trimming Guide'

Dec 19, 2020

Preface​

This guide can be used on any NTSC N64 motherboard. The trim line is slightly different between board revisions however the relocations will be roughly the same. At first glance the trim might seem more daunting due to the PIF relocation but this actually simplifies the relocations to ensure that all the essential traces and components are reconnected. This also creates a universal relocation method between all the motherboard revisions. As the title says, this trim is an advanced level trim which should be performed by experienced modders to...

• BitBuiltBot

• 
• 

View attachment 42154

Ok I wired the 3.3 volts but that didn’t fix it.

 

[comer.matthew96]

Ok I wired the 3.3 volts but that didn’t fix it.

 

[VariablePwn]

And just to check, you are plugging in a cartridge and a jumper pak when you are powering it on, yeah?

EDIT: Do you have one of your batteries hooked up to the "CHARGE" point?
They should be in parallel, both positive and both negative connecting to their respective locations on the PMS.

 

[comer.matthew96]

And just to check, you are plugging in a cartridge and a jumper pak when you are powering it on, yeah?

EDIT: Do you have one of your batteries hooked up to the "CHARGE" point?
They should be in parallel, both positive and both negative connecting to their respective locations.

I have the jumper pack plugged in and my batteries are wired in parallel.

 

[VariablePwn]

I have the jumper pack plugged in and my batteries are wired in parallel.

And a game cartridge?

 

[comer.matthew96]

And a game cartridge?

Just tried and it turns on for a second then back off.

 

[VariablePwn]

Just tried and it turns on for a second then back off.

Hmmmmm.
Apart from the capacitor you rewired, there isn't anything else removed?
If so, and you disconnect the PMS, does the console boot normally with a power supply plugged in?
I assume so, but good to check.

If it does boot, that would rule out the motherboard and direct the cause to either the batteries, charger, PMS, or some combination of those.

 

[comer.matthew96]

Boots with power supply. I didn’t take anything else off but the one capacitor.

 

[VariablePwn]

Okay, cool.
So looks like something to do with the PMS.Can you check the output voltage on the 5V and 3V3 tails, when the console is powered off, and then watch the measurement as you power on the console.
Trying to see if the voltage drops too much causing failure to boot. I'm guessing it's the 3V3 rail, because it will boot with no video if it's the 5V rail but not the 3V3.

 

[comer.matthew96]

Okay, cool.
So looks like something to do with the PMS.Can you check the output voltage on the 5V and 3V3 tails, when the console is powered off, and then watch the measurement as you power on the console.
Trying to see if the voltage drops too much causing failure to boot. I'm guessing it's the 3V3 rail, because it will boot with no video if it's the 5V rail but not the 3V3.

The 3.3 volt gets up to 3.25 volts when it powers on.

 

[VariablePwn]

The 3.3 volt gets up to 3.25 volts when it powers on.

I wouldn't think so, but any chance you can shorten your wires to be no more than a couple inches (~5cm)?

 

[comer.matthew96]

I wouldn't think so, but any chance you can shorten your wires to be no more than a couple inches

I wouldn't think so, but any chance you can shorten your wires to be no more than a couple inches (~5cm)?

I tried but that did not work.

 

[VariablePwn]

I tried but that did not work.

Darn.
I'm going to hazard a guess that it's something with your PMS.
Might have to wait for someone more knowledgeable to come along, or if you have discord, jump on the BitBuilt one and chat with some of the peeps there

 

[comer.matthew96]

Darn.
I'm going to hazard a guess that it's something with your PMS.
Might have to wait for someone more knowledgeable to come along, or if you have discord, jump on the BitBuilt one and chat with some of the peeps there

Ok. Thanks for the help.