I bought broken sega megadrive 2 clone console. Something wrong with 7805 IC supply (I changed to another, but no result). But now I want test electrolitic capacitors and resistors, because I thing somewhere short/open circuit exits. I have chinese made capacitor meter. If I measure some capacitors with meter it show good capacity. But if measure some other so tester shows "1". But if i remove that capacitor tester shows correct capacity. So how realy test capacitors in board? I need to buy other equipment ? Or something else ?
Megadrive 2 circuit board:
My capacitor tester:
I'm trying to test 100 uf electrolitic capacitor with 200 uf setting set on tester.