Restoring a PAL modded PCE

[lpopman]

Hi Guys,

I have just bought a PCE and found that it was PAL modded. Basically I need to know what the values of the removed components are.

Missing from the board are:-

Resistors

R137
R138

Capacitors

C117 (probably an electrolytic located just above the rf modulator)
C153 (not sure if this was originally mounted on the board or not as one of the pads looks factory tinned and unused)

Inductor

L104

and the crystal oscillator i think should be 21.47727 Mhz?

Can anyone help me with the values please?




Excuse the dodgy photos, i have a lousy cameraphone

[Bernie]

I dont understand why someone would do that?

[lpopman]

Me neither, It's sacrilege. 

[lpopman]

Ok...So I did some more research and came up with the following values...

C117 470uf

R137 6.2k

R138 8.2k

L104 Murata BL02RN2R1M2B EMI Suppression inductor (seems to be a replacement for the original BL02RN-R62)

XTAL 21.47727Mhz Crystal oscillator

I have to wait up to a month for the oscillators to arrive from China. As soon as they arrive, I will post results here...

Fingers crossed

[SuperPlay]

I dont understand why someone would do that?

Back in the day  lot of UK PAL TVs did not have an RGB scart or composite inputs, so the way forward was to mod your console to PAL.  I had used to see this done quite regular to PC Engines and Super Famicoms (before the Super Famicom PAL booster came out!)

Good luck with the Mod reversal :-)

[deubeul]

I dont understand why someone would do that?

Back in the day  lot of UK PAL TVs did not have an RGB scart or composite inputs, so the way forward was to mod your console to PAL.  I had used to see this done quite regular to PC Engines and Super Famicoms (before the Super Famicom PAL booster came out!)

Good luck with the Mod reversal :-)

Thanks for sharing info, so this was an early UK imported PcE?

 Funny to see how all the different european countries had to fight to have their PcE working, each with its own kind of mod.

[lpopman]

I dont understand why someone would do that?

Back in the day  lot of UK PAL TVs did not have an RGB scart or composite inputs, so the way forward was to mod your console to PAL.  I had used to see this done quite regular to PC Engines and Super Famicoms (before the Super Famicom PAL booster came out!)

Good luck with the Mod reversal :-)

Thanks for sharing info, so this was an early UK imported PcE?

 Funny to see how all the different european countries had to fight to have their PcE working, each with its own kind of mod.

Yeah, it's an early grey import from the looks of it.

50 Hz and different colour encoding standards made any PAL mod quite brutal during those days. And forget about RGB back then too, as SCART wasn't really on the scene then and dedicated RGB monitors were expensive.

The problems living in PALland lol

[deubeul]

Same problems different solutions in my beloved SECAMland