Buzzing Problem

Steve-o · Post by **Steve-o** » Sun Jun 18, 2006 2:05 pm

I need some help with my NESp out of the book. I have it all hooked up correctly, or at least I think I do, but when I plug my power supply (the original NES wall adaptor) into the battery jack, the PSONE screen or the NES makes a buzzing noise. Does this mean the NES wall adaptor is not giving enough power? Are my connections wrong or is there something wrong with my screen or NES? Any help would be appreciated.

vskid · Post by **vskid** » Sun Jun 18, 2006 4:37 pm

Is the NES power adapter also powering the screen? I think that would be too much power for the NES adapter to put out.

Steve-o · Post by **Steve-o** » Sun Jun 18, 2006 4:41 pm

Yes it is, and if I find a power supply with higher power and the problem still occurs I will post. Thanks.

EDIT: Okay I plugged in a higher power adaptor, it output 12V and 850 mA. It didn't even make it buzz liek the other one, so I plugged the Nintendo one in again to make sure it was working and now the Nintendo Adaptor won't make it buzz either. Any suggestions?

vskid · Post by **vskid** » Sun Jun 18, 2006 4:45 pm

Steve-o wrote:Yes it is, and if I find a power supply with higher power and the problem still occurs I will post. Thanks.

I tried running my N64 and screen off a power adapter and the adapter buzzed and the backlight crapped out because it couldn't provide enough power..

redruM_0381 · Post by **redruM_0381** » Sun Jun 18, 2006 7:04 pm

Isnt the original NES adapter, AC output?
This would cause a 60hz hum, along with other problems

Steve-o · Post by **Steve-o** » Sun Jun 18, 2006 8:50 pm

Yeah I checked and you're right. I unhooked the NES from the Other stuff and hooked it up to a TV like normal, and it still works fine. I guess it must be the screen or maybe a wire came loose. And what problems, specifically?

vskid · Post by **vskid** » Sun Jun 18, 2006 9:28 pm

Steve-o wrote:Yeah I checked and you're right. I unhooked the NES from the Other stuff and hooked it up to a TV like normal, and it still works fine. I guess it must be the screen or maybe a wire came loose. And what problems, specifically?

The screen takes DC, that would be a problem. I don't know if it is hurt by AC.

arfink · Post by **arfink** » Mon Jun 19, 2006 7:33 pm

AAAIIII! You, my friend, have officially ROASTED your PSOne screen. Fried, kaput. Its dead unless you can jump the fuse. The Psone screen can accept AT MAX 8 volts. If you put up to about 9 volts the screen will freak out and buzz, if you put in more it will toast the thing. See the screen hacking forum for help jumping the fuse, otherwise youre done. Good luck fixing it.

Steve-o · Post by **Steve-o** » Mon Jun 19, 2006 7:51 pm

I ran it through a 7085, I'm sorry I should have specified.

arfink · Post by **arfink** » Mon Jun 19, 2006 7:56 pm

Ummm, the 7805 outputs 5 volts. You should use the 7805 for the NES mobo (or noac) but the screen has its own regulator on it. You would not get buzzing if you tried to put 5 volts into the PSOne screen. The mobo is probably fine, just the screen is messed up. Check the wiring again; the 7805 is only for the NES, while the 7.5 volts from the battery or wall is supposed to come directly into the screen input. Note that this is considering only a PSOne screen made by Sony (no intec or anythign like that) I have experienced the buzzing when I tried to use 9 volts, and I knew that it was because there was too much voltage, not too little.

Edit: one way to know for sure if your screen is toast is to hook it up with its origional adaptor that came with it. If it does not work, then I am correct, and you have toasted it.

Edit again: Finally, if your NES adaptor is 9 volts AC instead of 9 volts DC, then its time to find a new adaptor, because the stock NES power adaptor is supposed to be DC.

Steve-o · Post by **Steve-o** » Mon Jun 19, 2006 8:05 pm

I used 2 7805's, one for the NES mobo and one for the screen, and for the NES adaptor, it is the official brand one, and it does say it outputs AC9V, so I'm unsure. I will have to check the screen though.

arfink · Post by **arfink** » Mon Jun 19, 2006 8:12 pm

Well, one thing i know is that BOTH of my official NES power adaptors output 9 volts DC (check yours with a volt meter and double check you weren't just reading the label wrong) I also know that 7805 regulators do not like AC and are only designed to operate on DC, ranged between 6 volts min. and maybe about 12 volts max. If you do anything less the regulator will not work, if more then you run the risk of literally setting it on fire. If you use AC, well... you do it at your own risk. Try my suggestion, seriously, because if the power supply that came with the PSOe screen won't power it, that means the screen has been damaged by having too much voltage put in. Good luck.

Steve-o · Post by **Steve-o** » Mon Jun 19, 2006 8:36 pm

Thank you for the words of wisdom lol.

arfink · Post by **arfink** » Tue Jun 20, 2006 11:55 am

Your welcome. Glad I could help you out. Sorry if I sounded like an guru-wannabe, I didn't mean to.

redruM_0381 · Post by **redruM_0381** » Wed Jun 21, 2006 7:19 pm

arfink wrote:Well, one thing i know is that BOTH of my official NES power adaptors output 9 volts DC (check yours with a volt meter and double check you weren't just reading the label wrong)

You must be reading it wrong.. I double checked... Original NES Adapters output 9VAC, not DC. This adapter will not work with that PSone screen.