Ok so... i got a dead Master System the other day. Ebay, untested, you know how the story goes. So i opened it up, replaced the NEC 7805 Voltage Regulator with a brandnew L7805CV. Now the green LED comes on. The system has power. However the screen stays black. I get no audio. Is the new voltage translator incompatible? Could it be a capacitor issue? I know Game Gears often show black screens due to aging caps. Any idea greatly appreciated.
Need help with a dead Master System...
- Chris
- Posts: 83
- Joined: July 1st, 2015, 8:44 am
- Location: Muenster
Need help with a dead Master System...
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- Chris
- Posts: 83
- Joined: July 1st, 2015, 8:44 am
- Location: Muenster
Re: Need help with a dead Master System...
Update: all the traces look spotless. I cant find cracks or corrosion of any sort. I also replaced the three 100uf caps, two near the RGB out on position c25 & c28 and the one near the power plug.
At the moment i am wondering if A) the voltage regulator is incompatible somehow, or B) if the z80 is shot?
Is it worth replacing the 4.7uf & 10uf caps as well? I know Game Gears wont switch on due to aging caps.
At the moment i am wondering if A) the voltage regulator is incompatible somehow, or B) if the z80 is shot?
Is it worth replacing the 4.7uf & 10uf caps as well? I know Game Gears wont switch on due to aging caps.