DA0P5HMB8F1 REV F Boardview or schematİc Needed

[ramrk]

hp 15s-fq2071tu

[mon2]

Re: DA0P5HMB8F1 REV F Boardview or schematİc Needed

What is the fault of the logic board ? Unable to locate a schematic (so far).

[SMDFlea]

Re: DA0P5HMB8F1 REV F Boardview or schematİc Needed

https://www.badcaps.net/forum/showpo...9&postcount=20

[AL._.EX]

Re: DA0P5HMB8F1 REV F Boardview or schematİc Needed

Only Quanta 0P5D boardview

[ramrk]

DA0P5HMB8F1 rev: f schematic needed

hp 15s-fq2071tu

[xrazor1]

Re: DA0P5HMB8F1 REV F Boardview or schematİc Needed

Best regards. Somebody knows PU1101 part number or replacement HP15-dy2064la. I apreciate so much any help.

[xpuko]

Re: DA0P5HMB8F1 REV F Boardview or schematİc Needed

Best regards. Somebody knows PU1101 part number or replacement HP15-dy2064la. I apreciate so much any help.

Hello, does anyone know the part number PU1101?

[rotceh_dnih]

Re: DA0P5HMB8F1 REV F Boardview or schematİc Needed

i just got one in with the same ic burnt off the board , ill have more of a look on monday when i get back into work but so far i think PU1101 is a SY8386BRHC

[Vanem]

Re: DA0P5HMB8F1 REV F Boardview or schematİc Needed

Schematic

[supermattch]

Does anyone have a copy of the schematics and boardview for DAOP5HMB8F1 rev: F? The ones posted were for daop5hmb8eo and op5d. The board I'm working with is DAOP5HMB8F1 rev: F. Thanks in advance.

[m1ch43lzm]

I have this one DA0P5HMB8E0, may be very close to yours, Tiger Lake (11th gen Intel CPU)

[supermattch]

m1ch43lzm, thank you for the files. I have several different boardviews for the op5 series but they all have PL1001 and PL1002 which on my actual board, doesn't exist. There is nothing at all where the board view shows PL1001 and PL1002. Could anyone help me find a board view that doesn't have those two components right next to the DC-in? Thanks in advance.

[m1ch43lzm]

Sometimes a component is designed in the prototype stage, but in the production version (or a later revision in this case), PL1001 and PL1002 are replaced with PCB traces (inductor = wire in this case)
Same goes for 0 ohm resistors, in the final version sometimes are replaced by a "wire" (just part of the PCB trace)
As long as the rest is in a similar position it should work

[supermattch]

I think they made drastic changes to the board at revision F because on the boardview that was posted, the dc-in pin number 6 goes to a resistor then to a diode from which there are like a hundred connections to all kinds of components. On my board, that diode is missing entirely.

[m1ch43lzm]

You mean this? +3VPCU goes everywhere of course, for now you can ignore D4704, what that circuit really does is to act as a voltage divider for detecting AC adapter type
From the adapter center pin, you have around 19v in series with a 470K resistor inside the AC adapter (for 45W adapter), that's how HP detects adapter type

Using the voltage divider formula, you have Input voltage = 19.5v, (470000 + 100) as R1, and R2 (R4733) is 7150 ohm, use the calculator below and you get 0.285V at the right side of R4731
https://ohmslawcalculator.com/voltag...der-calculator

AD_TYPE is read by an internal analog to digital converter in the EC (IT5570) to finally determine AC adapter watt rating

D4705 + R4731 is a protection in case the AC adapter is faulty (shorted middle pin to +19V), to protect the input pin 67 of the EC from overvoltage, the zener diode D4705 will limit the voltage to 5.6V; the voltage at AD_TYPE will be around 0.285V as the input pin 67 (ADC1) of the EC is high impedance

D4704 missing entirely doesn't affect anything if you analyze how that circuit works, as in normal operation that diode won't conduct, and in a faulty AC adapter condition with shorted +19V to the middle pin, a very small amount of current (limited by R4732-R4733 and R4721-D4705) will "flow" to the 3VPCU rail, but since that rail is "stronger" so to speak, it will "absorb" it (nothing will happen really); D4704-R4732 acts as a "clamp" to limit the voltage from AD_!D
https://electronics.stackexchange.co...-analog-signal
https://resources.pcb.cadence.com/bl...circuit-boards
Maybe the designers decided to remove D4704 altogether to save few cents, since D4705-R4721-R4732-R4733 will protect the EC from overvoltage anyway

If everything works correctly, you should get a solid white or orange LED at the charge port when the AC adapter is connected, depending if the battery is charging or not

[supermattch]

Thanks m1ch43lzm for the very detailed analysis... To be honest I'm a noob to electronics and just starting out. I'm going to go to school as a ee major soon but for now I'm limited to using my multimeter and chasing voltage rails. I've chased the 19.5 volt rail (which reads 19.66 on my fluke dmm) starting at the top two pins from dc-in past the first two mosfets and on. They are all 19.5volt and seem normal. However, I'm stuck where I read the 6th pin and it reads 0.283-0.284volts. Obviously something has shorted and the protection mechanism has turned on. But I dont know where to go from here. The pin goes to a resistor on the frontside and also to a resistor on the bottomside, then from there to R4704, then to a million different places. Do I keep chasing each of those paths? And check each component to see if they are shorted? Thanks for sharing your time with a noob like me.