Philips HTS7140 Soundbar

[trunks81]

Hello

Got this soundbar and problem is that is not powering on, And before that the unit display is gone, while the unit was working

I measured the PS and only got the 3,3V do i need to shortcut 3,3V with the on/off on the PS ? and can i use an 1K resistor for this

[budm]

Re: Philips HTS7140 Soundbar

Hello again Trunks81!
Right now the 5.1VSB pins should be < 5V (just like the Philips TV power supply boards we worked on), so when you jump the ON/OFF pin to the 5.1VSB pin with 1K resistor, the 5.1V should be 5.1V, and the rest of the power supplies should also come on.

I still need to back to this thread to help you fix this 42" Philips: https://www.badcaps.net/forum/showth...554#post983554

[trunks81]

Re: Philips HTS7140 Soundbar

Hello

At the moment i only have the 3.3 rest of the voltages are 0
I also added an better pdf of the supply

Edit when connecting an 1K to ON/OFF to 3.3V iam getting all voltages.
Except -27 is -22

[budm]

Re: Philips HTS7140 Soundbar

Hello

At the moment i only have the 3.3 rest of the voltages are 0
I also added an better pdf of the supply

Edit when connecting an 1K to ON/OFF to 3.3V iam getting all voltages.
Except -27 is -22

That PDF is much better.
Now I can see that the 3.3V is the standby power supply, the 5.1V and the rest are switched power supplies.
At this point I would figure out why the Main logic board is not sending out the command Voltage to run on the power supply.
What you can do is to have all the cables back in place except the ON/FF wire going back to the Main logic board, leave the resistor between 3.3V and the ON/OFF pin of the power supply the power up the unit to see what happen to all the power supply outputs and also see if the unit will work or not.

[trunks81]

Re: Philips HTS7140 Soundbar

Only thing that happens is that both fans are spinning,

[budm]

Re: Philips HTS7140 Soundbar

Do you have the pictures of the main board and how all the boards are connected together?

[trunks81]

Re: Philips HTS7140 Soundbar

ive uploaded the wiring diagram and picture of mainboards

[budm]

Re: Philips HTS7140 Soundbar

Holy Cow, that is lots of stuff for sound bar.
It has tuner and BD/DVD player too?