Hello, I joined after seeing a lot of good info on the psone screen. Ive had one a couple of years that I have yet to put in my car.
I didnt realise it was possible to do so much to this screen, Im hoping that after I remove the backlight, audio amp, move the regulators off board, and some other things, that there should be far less interferance/heat and improve the picture a lot.
I read most of the guides on here and they are all good, but I couldnt find any high res picture with everything. The one in this thread is down :O
So I have been drawing one up while hacking mine. I used the high res photo by Kyo, thanks for making it.
Here it is: http://rapidshare.com/files/244271090/psone.pdn
30mb !!! but two layers, easyer (paint.net .PDN)
or here is a 5mb jpg
. Layers really help with something like this.
One part Im not too sure off is between the PLL chip and high voltage side, as Zenlock has done here
(top right of board)
The smaller chip F? P25AH I couldnt find any datasheet for.
I assume the PLL chip is for the samsung?
Id like to know what the area does ( around p25ah to the inverter circuit) before I cut between it :O
I dont intend to use the audio amp, but thats actually one part I did trace out - I was going to cut it off but for the space saving its not really worth it as you would need to trace out and relocate parts of the second regulator. I will likely desolder the chip rather than cut it out.
I plan to use one or two lm7805's mounted on the case instead of the pcb mounted ones, so that extra heat is not dumped on the pcb, I noticed that it can affect the picture.
I still need to get a 7.5v regulator for the car, not sure what is best? I may have a lm7808 somewhere...
For the screen, Im going to remove the scratched antiglare.
Backlight will be 10+ SMD white leds, they wont be on full, but it will help get an even picture. Im going to test it using resistors for 100ma total, I think it will be bright enough... but I need to buy them first :O