mattb419 wrote:Hey Minkster, sorry to hear about the troubles. I'll list a few questions that come to mind here. Sorry if some of them are repetitive.
1) Battery is charged completely?
2) Power coming out of the LM317 regulator to the screen is around 7.5 volts?
3) Power coming out of the 7805 to the power in on the NES is 5 volts?
3.5) Everything is grounded? (battery, screen, nes)
4) psone screen is functional? (I know you had checked this with a different system, might do that again just to be sure it's still okay)
5) try hooking up just the video in to the screen, forget the sound until you get a picture working... you could even disconnect your controller wires too (then you could see if something was wrong on the pc boards), and get it down to the bare essentials. I think the best bet would be to get the nes and screen working with video only, then add in audio, then controls, and you're set!
Did you happen to pick up a multimeter yet? if you have access to eBay, you can get a cheap digital one for under $10, and it is a really useful tool for checking power levels, grounds, etc.
-Matt
1) Yes my battery is charged completely
2) I'll check this when I get a multimeter most likely from radio shack.
3) Same as 2
3.5) Yes sir
4) PSone screen is fully functional...even the brightness/audio controls work.
5) I'll try that
And like I said I really should go and get a multimeter...unfortunately I'm running low on cash so I may wait a little longer. Thanks for dealing with my noob work habits...I appreciate it
no problem also, just a note about the radio shack multimeters. They are nice, but the cheaper ones use non-standard batteries in them. That's why I chose not to buy a radio shack one. Depending on your budget, here are a couple options. Sears has some decent ones at a moderate price. I got mine there, an autoranging one in the $30-40 range, but they have some under $20. Also, if you have an Advance auto parts (or the other chain auto parts store, I can't remember the name right now), they usually have some. The Advance here in town has a digital one for $16.
Basically, I would suggest getting one that runs on AA or AAA batteries, so you don't have to invest lots of $ on specialty batteries.
I'm looking into getting one of these...thanks for the link ...I know it sounds kind dumb, but how do you use a multimeter? Is it fairly easy?
Oh by the way, I went over my connections and I did realize I had the wire going to the psone screen into video in instead of video out on the left pc board. So I switched the wire, but still showed nothing. The rest of my connections are correct, but I will desolder the whole pc board and just put together the video amplifier to see if I can at least get video.
multimeters are pretty easy to figure out, especially the digital ones. Just look at the manual that comes with it. You're mainly going to use the DC volts function, though you may get into DC amps at some point too.
I wouldn't worry about desoldering your pc board on your portable, just make sure you're getting the right voltage from the video amp to the screen (you can unhook the controller wires from the nes mobo if you want to eliminate that part from the loop, but you shouldn't have to desolder anything on the pc board... yet, at least )
marshallh: nice choice on the multimeter... I kinda wish I would've bought a cheaper one, since I really only use 2-3 functions on mine
Well I fried my psone screen today on accident...I had to much voltage using a wall adapter The fuse that fried was the ps2 one. As shown in this picture:
To jump it, do I just blob solder over that fuse? And do I have to connect it to anything?
Well, I was anxious so I decided ah what the hell. I first soldered the ps1 fuse and turned it on with the battery, and the screen flashed for a second and smoke came out of the ps2 fuse. So then I soldered that fuse also. Now the screen works again..amazingly (I really put this screen through hell I'm surprised its still even working )
demonofaj wrote:You are eviiiel for doing such things to a PSONE screen
Hehe Now if only I can get video working...damn my lack of electronic skillz
While searching in the sticky of how to bypass those fuses on the psone screen I came upon this: http://www.benheck.com/phpBB/viewtopic. ... 9&start=17 I wonder if this will help me get picture onto the psone screen...tell me what you guys think before I really kill my psone screen or nes
That also didn't work...I'm still waiting to pick up a multimeter, but I am just going to show the necessary wires I connected to get audio and video to work on the PSone screen. I think I have every connection right, but if I don't just comment on what I should change Here it is:
also, just a note about the radio shack multimeters. They are nice, but the cheaper ones use non-standard batteries in them. That's why I chose not to buy a radio shack one. Depending on your budget, here are a couple options. Sears has some decent ones at a moderate price. I got mine there, an autoranging one in the $30-40 range, but they have some under $20. Also, if you have an Advance auto parts (or the other chain auto parts store, I can't remember the name right now), they usually have some. The Advance here in town has a digital one for $16.
The fuse that fried was the ps2 one. As shown in this picture:
)
