DAOR33MB6E0 REV:E Partial ON

[ravi_1617]

Hi This board turns on
after starting consumes 0.09 Amps
3.3 and 5 volts ok
1.5 present at LP16
1.7 Present at PL 15
1.05 Present at PL 17
.9 Present at PL23
no other power reading

Tried to bios flashing ,came to know U31 bios chip pin 7 is found open, Replaced chip/flashed , still same condition

Thanks for Helping

[SMDFlea]

Post a LINK to the schematic..

Reminder: rules and organization of this section - https://www.badcaps.net/forum/troubl...f-this-section

[ravi_1617]

Hi This board turns on
after starting consumes 0.09 Amps
3.3 and 5 volts ok
1.5 present at LP16
1.7 Present at PL 15
1.05 Present at PL 17
.9 Present at PL23
no other power reading

Tried to bios flashing ,came to know U31 bios chip pin 7 is found open, Replaced chip/flashed , still same condition

Thanks for Helping

Sorry Admin .i did attached ,might be mistake from my side ,please Hepl me

Link to schematic --->>> https://www.badcaps.net/forum/troubl...02#post1236002

[ravi_1617]

Please help to proceed someone
Thanks

[mon2]

Carefully measure the voltage to ground of each pin on the charger IC at PU9.

Meter in DC volts scale of 30V or higher. Black probe be to ground. Red probe to point to test.

Need to know (as a minimum):

ACDRV
ACDET
REGN

[mcplslg123]

What about PL30 voltage?
PU13,pin15 voltage?
PQ36/47/55-volatge on all pins?
HWPG present?

[ravi_1617]

[QUOTE=mon2;n3245146]Carefully measure the voltage to ground of each pin on the charger IC at PU9.

Meter in DC volts scale of 30V or higher. Black probe be to ground. Red probe to point to test.

Need to know (as a minimum):

ACDRV
ACDET
REGN

These are the reading

1 19.81
2 19.81
3 19.76
4 24.98 ACDRV
5 2.97 ACDET
6 2.78
7 4.6 mil volt
8 3.32
9 3.382
10 3.34
11 2.82
12 2.81
13 2.82
14 GND
15 000.3 goes to 0000
16 5.93 REGN
17 5.88
19 2.81
20 19.79

At PL 16coil 1.5v also not present my mistake

Thanks for your interest mon2

[ravi_1617]

What about PL30 voltage?
PU13,pin15 voltage?
PQ36/47/55-volatge on all pins?
HWPG present?

Sorry to say mcplslg123 unable to find Pl 30
PU 13 Pin15 3.021
didn't find PQ 36 &PQ 47
PQ55 PIN123 3.3V
PIN4 12.11v
PIN 5678 3.392v

Pleas help

[mcplslg123]

There is boardview posted in this forum.use it to locate components and report back with the findings.
No help can be extended unless you answer in full. Hopefully, problem should be solved with united effort if not alone.

[ravi_1617]

There is boardview posted in this forum.use it to locate components and report back with the findings.
No help can be extended unless you answer in full. Hopefully, problem should be solved with united effort if not alone.

Thanks for your interest,
found Board view
PL 30 COIL is blank no power at both poins

PQ36 pin 1,2,5&6 3.391
pin3 12.12
pin 4 3.391

PQ47 PIN1,2,3 5V
PIN 4 12V
PIN 4-8 5

HWPG not present.

[mcplslg123]

Share resistance to GND on coil PL16/PL30
Mainon present?
Voltage on pin10/11/12/13/15 of PU5 after pressing power button?
PU13,pin15 voltage?

[ravi_1617]

Share resistance to GND on coil PL16/PL30
Mainon present?
Voltage on pin10/11/12/13/15 of PU5 after pressing power button?
PU13,pin15 voltage?

Sharing update
PL16354 Ohm
PL3017.2 Ohm
Yes Main on Present
PU5
PIN10 3.321
11 3.349
13 9.2 mil vol
15 5 v

[mcplslg123]

You forgot to mention pin12,PU5 voltage. PU5 seems powered and getting the enables as well.So Timer ON(TON) pin very important for it to give output.Check PR34 is 600K-often this resistor go bad. If PR34 is ok,replace PU5.
You've not shared PU13,pin15 ststaus aslo.

[ravi_1617]

You forgot to mention pin12,PU5 voltage. PU5 seems powered and getting the enables as well.So Timer ON(TON) pin very important for it to give output.Check PR34 is 600K-often this resistor go bad. If PR34 is ok,replace PU5.
You've not shared PU13,pin15 ststaus aslo.

pu5 pin 12 15.40 showing
PR34 is ok .
i don't have pu5 spare . i will update you soon .

Thanks