HP DV6 cannot turn on

[mielta]

Re: HP DV6 cannot turn on

Another way is do one Pin from PL805 desolder and then messure both sides

[mielta]

Re: HP DV6 cannot turn on

go on page 45
after PL805 in the near of PC100

[mielta]

Re: HP DV6 cannot turn on

Or simple remove CPU and try to power on

[String2016]

Re: HP DV6 cannot turn on

tried removing cpu and power on still same from 0.004 pressing power button goes to 0.007, i will try removed pl805 and measure each pin

[String2016]

Re: HP DV6 cannot turn on

removed cpu and removed 1pin of PL805 one side which desolder has 26.5k othe side has 0.565

[String2016]

Re: HP DV6 cannot turn on

if cpu is plugged in one side lifted pin 30.1k and 0.560 other side

[mielta]

Re: HP DV6 cannot turn on

which side has the 0.56 ohm

[mielta]

Re: HP DV6 cannot turn on

pin11 from ic or near the capacitors

[String2016]

Re: HP DV6 cannot turn on

the side of coil pl805 0.56ohm connected to pin11 of the ic

[mielta]

Re: HP DV6 cannot turn on

check pc857 otherwise the ic is defective
i think so

[String2016]

Re: HP DV6 cannot turn on

PC857 is ok and pin 11 of pu805ic is beeping to the ground

[String2016]

Re: HP DV6 cannot turn on

anyone can help on this please

[mielta]

Re: HP DV6 cannot turn on

you must change the ic

[String2016]

Re: HP DV6 cannot turn on

@mielta thanks for the response is there compatible replacement for this ic TPS51461?i cannot find same ic on scrap board

[mielta]

Re: HP DV6 cannot turn on

No sorry
you can it order by Ebay or Aliexpress it is not expensive

[mon2]

Re: HP DV6 cannot turn on

Where and if possible, purchase the part from real distributors or the manufacturer of the component.

This part appears to be available directly from TI (guessing Asia distribution for you):

https://www.ti.com/store/ti/en/p/pro...p=TPS51461RGER

Confirm the package is the same as yours and recommend that you buy it from TI directly so that you have a 100% new and original part.

The prices on Aliexpress are incredibly low but may be ok. The Aliexpress prices are 1/10th the prices on the ti.com webstore. They must be dumping these in Asia or are surplus from closed builds.

https://www.aliexpress.com/item/3289...archweb201603_

[String2016]

Re: HP DV6 cannot turn on

@mielta i found on scrapboard same tps51461 replacing it still same issue pin 11 is beeping to ground and 0.007 up0n pressing power button

[String2016]

Re: HP DV6 cannot turn on

I lifted the pins on PL805 that is connected to pin 11 short is gone

[mielta]

Re: HP DV6 cannot turn on

Then the short is on other side check PC84/88/91/100/78

[String2016]

Re: HP DV6 cannot turn on

removed pc84/88/91/100/78 tested outside the board all caps are good even all removed still pin 11 is beeping once pl805 coil soldered back the pin