A2289 820-01987 no power

[hgoncalves]

Hi,

I have an A2289 820-01987 wit no power. I't only puls 5V from Ampmeter.

PPBUS_G3H seams to be shorted:

PPBUS_G3H = 0.006 on diode reading, and 2.8 ohm to ground

PPBUS_HS_CPU has the same readings.

Can you help?

 

[2informaticos]

Check if any coil gives the same reading to ground.

 

[hgoncalves]

Hi,

Today, I have on PPBUS_G3H, 3.5 ohm to ground, and I get 3.2 ohm to ground on L7410/20.

 

[2informaticos]

Check resistance (ohm scale) between L7410/20 and PPBUS_G3H.