Check again the voltages mentioned in the previous posts.
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- Thread starter bartech
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Replace U8500.
First, be sure no short, or low resistance at 5V_S0SW_LCD.
First, be sure no short, or low resistance at 5V_S0SW_LCD.
"5v_s0sw_lcd - 1443"
Not sure what kind of reading is that.
Diode mode should be good enough to check; with LCD connected.
Not sure what kind of reading is that.
Diode mode should be good enough to check; with LCD connected.
Once you connect something mor eon same line, diode mode readings should drop a bit.
Unless you've checked in reverse way.
You¡ve said U8500 gets power and enable; it should generate 5V_S0SW_LCD.
Just in case, replace C8509; also try another U8500 chip.
Unless you've checked in reverse way.
You¡ve said U8500 gets power and enable; it should generate 5V_S0SW_LCD.
Just in case, replace C8509; also try another U8500 chip.
U8500 power input and enable signal drop?