Did I break it? (PSone LCD mod)

HK-47 · Post by **HK-47** » Sun Dec 19, 2004 10:48 am

Yeah, im pretty sure there is a fuse, If you jump it you should be ok. Though jumping it means you WILL fry your board next time you screw up the polarity.

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 10:55 am

or find out the kind and try to find a not smt fuse to put on

BCs300z · Post by **BCs300z** » Mon Dec 20, 2004 12:27 am

I think you guys may be right on the money here. On the board there are two components marked PS1 and PS2 and they are outlined in a box on the board. There is right around 7.5V on each of them on the side closest to the point of entry (master connection) but on the other side I get 0.0V on the PS1 and 2.38V on PS2. They are the points with the arrows pointing to them leading from a serial number.

There is also a note on the board that says "CAUTION: replace IC link marked" So who knows at this point.

BTW: the little components marked PS1 and 2 have an "N" on them.

Are we on the right track here?????

thanks again in advance.

JackFrost22 · Post by **JackFrost22** » Mon Dec 20, 2004 6:31 am

yes those are fuses

HK-47 · Post by **HK-47** » Mon Dec 20, 2004 11:25 am

Yeah sounds like a fuse.

BCs300z · Post by **BCs300z** » Tue Dec 21, 2004 8:39 am

To my knowledge, fuses don't typically attenuate a signal though. They mearly provide just enough continuity for the inputted signal to pass through it. Anything over the rated amount is what blows the fuse.

So why is there only the 1/3 votage making it through the other side? Is this maybe the "smart fuse" you are reffering too? A fuse that is a resistor as well, providing not only signal spike protection, but resisted attenuation?

Thanks

Post by **gannon** » Tue Dec 21, 2004 8:55 am

Maybe one is a fuse, and the other is just simply a resistor.

HK-47 · Post by **HK-47** » Tue Dec 21, 2004 1:39 pm

I was talking about the first thing, so what gannon says makes sense.