Archive for the ‘NEC’ Category

DIN 8 and Power from Super SD System 3

Montag, Juli 2nd, 2018

As I have open the Super SD System 3 for the Audiofix. I change the Mini Din A/V Connector to my common 8 Pin DIN connector, because I have a lot of consolse fitted with this same connector.

PCE_PowerInputviaEx_Port4

I am not a friend of cables from different sides of a console. So i put both RGB and Power supply in the back and have a nice looking PC-Engine Combo

PCE_PowerInputviaEx_Port3

Pinout RGB

 

scart_PC-Engine_French_Layout_2016

The Powersupply +9V at the red wires GND at the black wires

PCE_PowerInputviaEx_Port1

I used a big diode to avoid wrong input voltage

PCE_PowerInputviaEx_Port2

PCE_PowerInputviaEx_Port5

Super SD System 3 Audio Fix

Montag, Juli 2nd, 2018

you can hear a lot of digital noise, when accession SD Card. This fix solve it and we have silence :-)
With the help of a single 10uF 10V Elko its done. Minus at the yellow Cap, Plus to the via

SSDS3Audio_Fix10u10V

Donnerstag, Dezember 7th, 2017

Today I revived a the holy grail of PC Engine Hardware a PC Engine LT.

PCE_LT_ (3)

Only 5 screws and remove 3 ribbons you will get the main PC Engine Board

PCE_LT_ (11)

Because of its age the Caps are brocken and need a replacement.

After some exchange in the power area it works again :-)

 

PCE_LT_ (10)

 

look how bad it looks because of leaking caps

 

 

 

 

PCE_LT_ (8)

 

how ugly it looks. Some alkohol for cleaning

 

 

PCE_LT_ (6)

 

 

PCE_LT_ (5)

 

exchanging of most caps to kerkos

 

 

PCE_LT_ (4)

 

after recap

LT jailbarfix

 

jailbarfix too with replacement of 2 kerkos into: 4,7uF 16V or 25V

 

 

 

 

Jailbarfix Super Grafx

Dienstag, April 4th, 2017

not a big thing replace these 2 caps with 4,7uf/16V in SMD eg. G0805 and the jailbars are gone.

you will find them on solderside from the PC Engine Super Grafx.

jailbarfix_supergrafx

Modding PAL TurboGrafx

Freitag, September 30th, 2016

I got some rare NOS TurboGrafx in 50Hz PAL Version.

img_0476
What can we do with this kind of PC-Engine

a) Speedup and change it to 60Hz

-Exchange Osscilator X201 to 21.47727Mhz
-cut Pcz80 Pin 15
-Solder wire from Pad pin 15 to Pin 22

img_0442

b) RGB bypass for best picture

I took the RGB Signal from C154 to C156 after removing the Kerkos. The wires leads directly to the Hu6260 RGB-Out

img_0435

using the rgbbypass PCB

img_0443

yellow wire to desoldered PIN 44 from HU6260 (C-SYNC)

I am using an old “french” pinput from the 90’th. So I have to reroute some cirquits

scart_PC-Engine_French_Layout_2016
Desolder Din and cut GND on Partsside for make standard french Version of Din8 Cable working.

img_0455

Cut 5 Din Via circuits and wire as shown here
red audio 2 (right), white Audio 6 left, grey 5V
yellow desoldered Pin 44 from Hudson 6260 CSYNC

 img_0475

c) Jailbarfix

exchange C137 and C133 to 4,7uf/16V

jailbarfixpalturbografx

 

img_0469

 

d) jap/eng switch

you need to switch 8 wires (15,16,17,19,20,21,22,23). I done it with two  analog switches  MC14551BCP

img_0458

img_0462

 

img_0473

 

internal PC Engine UWRC Receiver

Dienstag, September 6th, 2016

 

I used my IFU-30 Unit, so there was no need to remove the RF Unit. As I didn’t wanted some wires to the left or right side.

I put all needed connections to the rear side. Power, RGB-Out, Audio Out.

 

IMG_0073

 

I opened the RF-box removed the orignal switch and replaced it with UWRC switch.

ground to one side and the other side of the switch to the uwrc board

IMG_0028

IMG_0032

IMG_0034

IMG_0033

IMG_0067

thanks again to micro, for his great Idea how to make the UWRC plugable, by removing the filters.

IMG_0021

IMG_0020

IMG_0022

IMG_0051

green wire uwrc controll switch, red and black to the signal led combo I created at the upper side

blue “bigger” wires to the 7805 replacement for swiching the pce off/on

IMG_0041

a red 5mm led and a green 5mm led dremel work and to the ventilation grid

IMG_0044

IMG_0061

IMG_0058

IMG_0062

no more heat -> replacement of the 7805

IMG_0038

Great feature, you can power off and on the PC-Engine via holding select and Run for around 1sec. Ideal for users of everdrives. Hope this feature will find his place in all new internal receivers from micro ;-)

Final Pic

IMG_0072

UWRC PC Engine Shuttle Controller

Samstag, Juli 30th, 2016

A futuristic styled Controller for the PC-Engine Shuttle. Now its time to make it wireless.

thanks to the PCB of micro and some reposition of the led usb powersupply it works great.

I put it at the hole of the original wire and with some hotglue it works

shuttle_1

shuttle3

shuttle_2

shuttle4

shuttle6

shuttle5

 

 

PC Engine Duo R/RX RGB Mod with bypass PCE-TV

Mittwoch, Juli 27th, 2016

Nothing really new, only to see how to add THS Amplifier working in a Duo R / RX.

I used Pin 44 of HU C6260 C-Sync for Sync. So you have to cut the Video Signal to the Din Connector (yellow wire).

Black wire is optional, for “more” GND

 

duo_rx_1

For the Din Pinout I used the old French Layout born in the 90ths. With RGB added to the 3 new Pins of the Din 8.1. The rest of Pins are untouched (exeption C-Sync)

3 resistors 22 Ohm are used for make PCE-TV work to output around 0,7V. The PCB is the 1st Revision of micro. Power is taken from a Elko nearby. (orange/black=GND, orange/red=5V)

duo_rx_4

 

duo_rx_2

duo_rx_3

Scart Pinout

scart_PC-Engine_French_Layout_2016

Jailbars removement

After checking the picture there are jailbars :-(

After replacement of two  capacitor the picture is great.

replace C909 and C923 with 4,7uf down under Hu C6260

jailbarfix_Duo_R

 

IMG_8818

You final reward will be 1000 Points :-)

Wireless Rules

thanks micro

wireless-pce-rules

UWRC PC-Engine Cordless Controller

Donnerstag, Juli 21st, 2016

I done some ironical way of UWRC ;-)
Here i am using 3 of the 4 Batteries for powersupply of the UWRC, because of the max. voltage of 5,5V of the UWRC Board.

IMG_8597 IMG_8599 IMG_8602 IMG_8604 IMG_8610 IMG_8609 IMG_8608 IMG_8607