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[Console Repair/Mod Center / Re: PC Engine Duo White Screen problem :(]

you're right, its not a power led, its a busy, cd rom activity, led. Maybe that was always off , i just noticed it was off when the video died. Still both legs of that LED are at 5v when power is on which is not normal is it? Any idea's on what to check first?

Thanks

[Console Repair/Mod Center / Re: PC Engine Duo White Screen problem :(]

Hi, thanks for the reply. No RGB mods on this machine, just standard composite signal. I have replaced all capacitors on the board and all 3 hu (6260/6270/6280) chips from a known working pc engine but still getting a white screen. The odd part is that both the led anode and cathode on the pcb are at 5v when checked with a multimeter so the ground side is receiving a positive charge from somewhere.

[Console Repair/Mod Center / PC Engine Duo White Screen problem :(]

Hi all, i have a PC Engine Duo i got off ebay cheap as it wasn't working. It arrived and would boot my everdrive fine however cd's wouldn't spin at all. After replacing caps i got the cd drive working and the machine was fine and dandy. However while playing some bomberman from my everdrive i noticed the power light was off and i lost video but audio continued. I turned the machine off and back on but now i only get a white screen, this is the same with the everdrive connected or disconnected. The cdrom doesn't move if i press down the lid switch. I had a quick hunt around and it was suggested in other threads that one of the HU chips may have failed. I have replaced the HUc6260, HUc6270 & HUc6280 with known working chips from a pc engine but still i get nothing but a white screen. The fuse is fine. I removed the power led and put in a new one thinking it had blown however the new failed to function too. I checked with a multimeter and i am getting 5v on both the anode and kathode.

Any tips or help would be appreciated

Thanks

[Console Repair/Mod Center / Re: PCE No Audio]

Sorry for lack of update.

I have reflowed and recapped the entire board. Removed all modifications and still no audio. Something has obviously failed.

Not to worry, I'll keep my eye out for a cheap replacement console

[Console Repair/Mod Center / Re: PCE No Audio]

Hi all, as mentioned, there is no Audio from any output source. This includes the original RF or composite AV. I'm gonna try reflowing the chip with some flux, solder paste and hot air but if that doesn't work i'll just look for a replacement unit. Will probably pick up a core grafx as that was a lot neater to rgb mod.

[Console Repair/Mod Center / PCE No Audio]

Hi all, long time member first time poster

I took delivery of a White PC Engine last week with a couple of games. All worked fine with the RF except i had a black and white picture (NTSC signal on PAL TV).

I was going to RGB mod it (have previously done a Core Grafx) but didn't have the parts to build an amp so thought for now i'd try composite.

Using the pinout found on gamesx I soldered the cables to the expansion port using A22 for Composite Video & A21 for video ground and A1 for Left Audio, C1 for Right Audio, C2 for Audio ground. I plugged it in and everything worked fine.

I then put aside while i ordered an amp as i was set on RGB modding it.

Today however (Amp still not arrived yet) i wanted to play some games so plugged it in and i have no audio. I thought maybe it might be bad capacitors as i'd read of in other models of PCE so recapped the entire motherboard but still I have no audio.

I went back to RF and again no audio.

I did a google search and found that supposedly HuC6280 is responsible for audio & controller functions so i decided to try tapping audio directly from the chip. I soldered the wires onto pins 17 (L Audio Out), 18 (R Audio out) & 20 (Audio Ground) as in the pinout found on Console5 wiki but again i have no audio.

So i guess what i'm asking is, does anyone know anything else i can try or is likely that the chip has failed and i'm gonna need a replacement board/console?