Tony Tone
Member
820-2936 Water damage. Have made lots of progress. PPBUS_G3H is 3.23V.
I don't have my 3.3V rail, but do have PP5V_S5. I notice if I diode mode to ground on L7220-1 I get 0.130. I have changed Q7220 and also changed U7200 a couple times. Once I change I do my diode mode reading and something like 0.300 something that looks more normal. But once I connect power it goes back down to 0.025 or something really low. So I am guessing something else to blame.
My general question is: should I change all of these at once? U7200, Q7220, Q7260, Q7261, & Q7221?
I don't have my 3.3V rail, but do have PP5V_S5. I notice if I diode mode to ground on L7220-1 I get 0.130. I have changed Q7220 and also changed U7200 a couple times. Once I change I do my diode mode reading and something like 0.300 something that looks more normal. But once I connect power it goes back down to 0.025 or something really low. So I am guessing something else to blame.
My general question is: should I change all of these at once? U7200, Q7220, Q7260, Q7261, & Q7221?