PC Engine GT
Sub-pages
Schematics (PC Engine GT)
We have remade the PCB , but not done the schematics yet. Our own schematics will come eventually. Until then Board-Fol...
Board Scans (PC Engine GT)
The worlds first board scans and layers. I destroyed my own personal PC Engine GT for this, so if you are going to share...
Initial Power Up (PC Engine GT)
Start by removing the motherboard with game cartridge board attached. Remove all wires. The power path from the batterie...
Power From Bench (PC Engine GT)
A good first diagnostics step is to power the console from bench and measure the current draws. Check your Initial Power...
5V Circuit (PC Engine GT)
The 9V from the battery comes in, through the F500 fuse, into the Q502 transistor (BJT PNP). Note this isn't a re...
Backlight Driver (PC Engine GT)
The backlight driver circuit that generates the high voltage ( 900V+ ) needed for the fluorescent tube to light up, is...
LCD Circuit (PC Engine GT)
The PC Engine GT has the high voltage (backlight tube) generation circuit, HSYNC/VSYNC and data generation on the ...
Audio Circuit (PC Engine GT)
Audio amp is NJM2073M , labelled U10 or IC100 , near volume wheel. Audio From 6280 to Amp The audio comes out of the...
Front Button Board (PC Engine GT)
The front PCB that screws into the front shell and has the button pads on the board has a BU5782K ASIC that handles h...
RGB LCD Install (PC Engine GT)
The PC Engine GT already has native RGB, so installing a kit that accepts RGB and CSync such as the RGBDRV or LCDDVR boa...