Sega CD model 1 power problems (Transistor Trouble)

[relo]

I've recently acquired a asian model 1 sega CD which at first sight the only problem with it was the fuse, but now I've replaced the fuse but it still doesn't power on. Occupationally it flickers its lights for a second (about once every 50 times) but nothing more.

I've also checked the voltage regulator but that gets barely any power (about ~0.1V in and ~0.01V out).

I do use a regular (euro) megadrive 1 AC adapter for it but for the megadrive it self I use a AC adapter for the model 2 master system (which seems to work fine on just the megadrive).

Edit:
I've found the flaw in the system (T4), but what transistor do I need to replace it?

[Hobie-wan]

You need to be using whatever outputs the correct voltage and at least as much amperage as the system expects with the correct polarity and a plug that fits. Is the brick a 120 or 220 input? Is your location 120 or 220? Without this information it is hard to help.

[relo]

I live in 220 land and use a power 220 brick for the model 1 megadrive (MK-1602) to power the sega CD, which is the same as the sega CD normally uses I've been told.

BTW is there an easy way to check the connections on the power board? And should there be a voltage diffrence between both sides of the diode (D1)

Edit:
I've found the flaw in the system (T4), but what transistor do I need to replace it?

[relo]

As it still doesn't give much, if any, voltage (giving similar readings as the original). I've checked with the schematics if it was installed well, which it seems it was. Also I've checked the transistor it self which seems to alright. So I still suspect it being installed wrong. But it might also be that the Sega CD doesn't get enough power to know the megadrive is powered up (but I can't check that voltage due to it being a model 1).

I've added a picture for reference:

The prong naming is what I believe it to be according to a data-sheet I've found.
The numbers are what I get with diode checking with the red poker from the multimeter on the middle one.
And front and the fuse are just for reference as for orientation of the transistor and board.

*and I noticed that base doesn't seem to come from the megadrive on the schematics or am I reading that wrong?*