No Power DAZAARMB6E0 REV E

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

ACN- 5.7V stable
ACP- 5.7V stable
CMSRC -5.7V stable
ACDRV- 5.7V stable
ACOK -0V
ACDET - 2.7V stable
IADP -0V
IDCHRG- 0V
PMON-0V
PROCHOT-0V
ILIM-0V
LDODRV-0V
PHASE-0V
HIDRV-0vV
BTST-5.6V
REGN- 6V

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

Then check requirement of 3V/5V regulator.

PU7
TPS51225RUKR
pins with voltage reading only

PIN3 - VREG3 -3.2V
PIN9- VBST2 2.2V
PIN12 VIN -5.8V
PIN17- VBST1-2.2V

ALL OTHER PINS has no VOLTAGES ZERO values

[mcplslg123]

Re: No Power DAZAARMB6E0 REV E

PU7
TPS51225RUKR
pins with voltage reading only

PIN3 - VREG3 -3.2V
PIN9- VBST2 2.2V
PIN12 VIN -5.8V
PIN17- VBST1-2.2V

ALL OTHER PINS has no VOLTAGES ZERO values

When the vin is at 5.8V, do you think IC will work. Inject 19V on CLR directly and then measure TPS51225 pins. that will make sense. On injecting 19V on CLR, you must get 3V on coil. If you are still not getting 3V on coil, there lies the problem. BQ24780/S will never work if there is any issue with 3V rail. I've already given you these inputs, why not work on them. It should'nt take 10-15 days to repair a board unless you are stuck for want of spares.

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

When the vin is at 5.8V, do you think IC will work. Inject 19V on CLR directly and then measure TPS51225 pins. that will make sense. On injecting 19V on CLR, you must get 3V on coil. If you are still not getting 3V on coil, there lies the problem. BQ24780/S will never work if there is any issue with 3V rail. I've already given you these inputs, why not work on them. It should'nt take 10-15 days to repair a board unless you are stuck for want of spares.

MY bq24780s is getting hot

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

When the vin is at 5.8V, do you think IC will work. Inject 19V on CLR directly and then measure TPS51225 pins. that will make sense. On injecting 19V on CLR, you must get 3V on coil. If you are still not getting 3V on coil, there lies the problem. BQ24780/S will never work if there is any issue with 3V rail. I've already given you these inputs, why not work on them. It should'nt take 10-15 days to repair a board unless you are stuck for want of spares.

what do you mean by CLR sir ?

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

ACN- 19v stable
ACP- 19v stable
CMSRC -19v stable
ACDRV- 19v stable
ACOK -0V
ACDET - 1.2V stable
IADP -0V
SDA-3.2V
SCL-3.2V
IDCHRG- 0V
PMON-0V
PROCHOT-0V
ILIM-0V
LDODRV-0V
PHASE-0V
HIDRV-0vV
BTST-5.6V
REGN- 5.9V

pump voltage at PR188

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

ACOK -0V testing the PR30 100K value outboard. PR195 correct outboard
ACIN PIN 2 PR30 has 2.9v
REGN-PIN 1 PR30 5.9V

[mcplslg123]

Re: No Power DAZAARMB6E0 REV E

MY bq24780s is getting hot

You injected 19V on CLR and BQ24780S getting hot. Right?? So Charging IC is likely to be bad.Was 3VALW available on coil when 19V was injected on CLR(Current Sensing Resistor)??

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

You injected 19V on CLR and BQ24780S getting hot. Right?? So Charging IC is likely to be bad.Was 3VALW available on coil when 19V was injected on CLR(Current Sensing Resistor)??

Nope no voltage on 3v coil and 5v coil. I already change the charger ic

[mcplslg123]

Re: No Power DAZAARMB6E0 REV E

Inject 19V on CLR, then measure voltage on all pins of TPS51225 and post here. Have you replaced TPS51225??

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

Inject 19V on CLR, then measure voltage on all pins of TPS51225 and post here. Have you replaced TPS51225??

PU7
TPS51225RUKR
pins with voltage reading only

PIN3 - VREG3 -3.2V
PIN9- VBST2 2.2V
PIN12 VIN -19V
PIN17- VBST1-2.3V

ALL OTHER PINS has no VOLTAGES ZERO values

[mcplslg123]

Re: No Power DAZAARMB6E0 REV E

Vreg5 not there?? Resistance on vreg5 pin??

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

Vreg5 not there?? Resistance on vreg5 pin??

39koms

[mcplslg123]

Re: No Power DAZAARMB6E0 REV E

Inject 5V on vreg5 pin and see the consumption on dc supply. Anything getting mildly hot?? You should'nt use adapter/battery while injecting 5v on vreg5 pin. If things are normal, replace the 51225 IC. You must get 3V/5V Ldo working.

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

Inject 5V on vreg5 pin and see the consumption on dc supply. Anything getting mildly hot?? You should'nt use adapter/battery while injecting 5v on vreg5 pin. If things are normal, replace the 51225 IC. You must get 3V/5V Ldo working.

nothing getting hot jst taking 1 miliamp every seconds goes 0amp

[mcplslg123]

Re: No Power DAZAARMB6E0 REV E

Then why not replace TPS51225 and see if LDO lines are working or not??

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

Then why not replace TPS51225 and see if LDO lines are working or not??

Iwaa waiting for this type of ic sir order time

[dinosglxaros]

Re: No Power DAZAARMB6E0 REV E

hello i have a similar problem with this motherboard, but when i make a jumper of pq17 from pin 5 to va2 the laptop works..is it ok to leave it with that jumper?

[kalilinux25]

Re: No Power DAZAARMB6E0 REV E

hello i have a similar problem with this motherboard, but when i make a jumper of pq17 from pin 5 to va2 the laptop works..is it ok to leave it with that jumper?

The battery wont charge

[kandyan]

Re: No Power DAZAARMB6E0 REV E

since there is no shorts, try a jumper from pin5 of PQ17 to PR8(CMSRC side). Be careful not to connect at VA2 side. Plug your dc again and hopefully you will get 24V at pin4 of PQ17. Report back.

I have the same symptom motherboard and I have changed the BQ24780S and PQ17 MOSFET with no success.
After I have made a jumper between pin5 and CMSRC side motherboard was turned on but not charging if i plugged in the battery. What might be the problem please?