hp 17-k dont start , problem with 5valw (no 5vs5_on) day31amb6c0 rev c

[totto210]

Hi guys, I need a big help.
i don't have 5valw, (pu12)
the signal (pin 1) from pu12 has 0,11v.
I go back and it comes straight from the EC (pin128) same thing, no sulfate or anything.
then looking at the diagram I see that pr185 is not present, but if you have 3.3v so I make the bridge, now the mother is with a consumption of 50ma put the source. but there is no case nor responds the power button.
With this if I have 5valw.
I leave measurements I made
u3 bq738h
1 19.5v
2 19.5v
4 25.4v
5 3v
6 2.71v
11 2.9v (without battery)
16 6v
20 19.5v

EC
D6 ec_pwok 0v
+3v_pcu 3v
+3v_ecacc 3v
dpwrok_ec (87) 0v
slp_sus_on 3v
acin 3v
rsmrst 0v
lid_ec 3v
3vsb 3.3v
5vs5_on (128) 0.11v (resistor 81k - gnd)

thx all for help

[totto210]

dead forum?

[SMDFlea]

dead forum?

No, the forum is very much alive. Post a link to the schematic/boardview https://www.badcaps.net/forum/troubl...f-this-section

[totto210]

No, the forum is very much alive. Post a link to the schematic/boardview https://www.badcaps.net/forum/troubl...f-this-section

ok sory flea, im hurry
schematic and bdw
https://www.badcaps.net/forum/docume...ew#post3484561

[mon2]

Hi (from Asia). What is dead is the Wanchai Computer Centre. Zombies that do not care to help without the might HKD to service a dead iMac. Counting down the days to return back home.

Met with a thermal camera manufacturer that attaches (only) to Android - 25hz refresh - works very well. Wholesale price < $150 USD but has MOQ. Will be reviewing the Mobile Electronic Fair this weekend in HK.

Remove all power. Test the resistance between pin # 1 on PU11 to PU12. Are they not driven by the same signal (S5_ON)? Therefore the same signal voltage should be present on each buck converter.

[totto210]

Hi (from Asia). What is dead is the Wanchai Computer Centre. Zombies that do not care to help without the might HKD to service a dead iMac. Counting down the days to return back home.

Met with a thermal camera manufacturer that attaches (only) to Android - 25hz refresh - works very well. Wholesale price < $150 USD but has MOQ. Will be reviewing the Mobile Electronic Fair this weekend in HK.

Remove all power. Test the resistance between pin # 1 on PU11 to PU12. Are they not driven by the same signal (S5_ON)? Therefore the same signal voltage should be present on each buck converter.

hello friend,sorry to hear that
as i commented. s5_on(pr185) is not present (the resistor) in pu12, only pr184. i simulated with a pr185 bridge. and the result is that it has a consumption of 50ma. and it does not respond.
the s5_on signal comes from pin100(ec) and not 128.
I have measured resistors:
pu11
pin1 24k

pu12
pin1 85k

to make sure it is not the divider I measured on pin128 (ec) same result, 0.11v.

[mon2]

But PU11 is enabled?

[totto210]

But PU11 is enabled?

yes, native 3valw is ok

[PacoGT]

Hi guys, I need a big help.
i don't have 5valw, (pu12)
the signal (pin 1) from pu12 has 0,11v.
I go back and it comes straight from the EC (pin128) same thing, no sulfate or anything.
then looking at the diagram I see that pr185 is not present, but if you have 3.3v so I make the bridge, now the mother is with a consumption of 50ma put the source. but there is no case nor responds the power button.
With this if I have 5valw.
I leave measurements I made
u3 bq738h
1 19.5v
2 19.5v
4 25.4v
5 3v
6 2.71v
11 2.9v (without battery)
16 6v
20 19.5v

EC
D6 ec_pwok 0v
+3v_pcu 3v
+3v_ecacc 3v
dpwrok_ec (87) 0v
slp_sus_on 3v
acin 3v
rsmrst 0v
lid_ec 3v
3vsb 3.3v
5vs5_on (128) 0.11v (resistor 81k - gnd)

thx all for help

do you resolve the problem?