philips 65PUS6162/05 dead no sby led

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

There wouldn't be any change if you let it cool down. 200c isn't hot enough to melt anything and cooled down, any expansion has gone.

what temp would you recommend when attempting a reflow ?
and for how long approx?

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

from what i can see there are only 3 things that can control the psu state:
dim
ps/on
on/off
the remote reciever small pcb has 3.3v feed ok .
on one of the pins when remote button is pressed the voltage drops to 2.9v
this tells me that the remote reciever is ok

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

ive had a good close look at main board and the 2 pins for 5v are not connected to anywhere
just as the same 2 pins on the psu not connected.
ive had a word with the original owner who says nobody tried to repair tv due to its size he couldnt even get a repair man to call out to look at it .he says it worked fine then just went dead
also i entered the tv model number in google to find a psu ,
so i could look at it to compare
there is one exactly the same with picture of it i can now confirm it is the same


your suggestion to run the MB with external 3,5-5v wont work because the MB
pins are not connected to anything

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

is there any way to check if main board is the wrong one from the white paper label on the board?
as there are no part numbers in the service manual?
i will try to follow the cct on mainboard and get back to you thanks

[Diah]

Re: philips 65PUS6162/05 dead no sby led

EDIT: or you can feed the MB as stand alone ( no PSU ) with 3.5-5V 1A at the 5V pins on the sockets, check front STB LED come on... and put the DM on wires PS_ON ref to - external power if there 3.5V after you press power.. if this was successful mean our judgment on PSU was correct.

[Diah]

Re: philips 65PUS6162/05 dead no sby led

one things more from my side... yours Tv not Android system.. if it was Android then 12V should be active to start as hot start. also i am afraid the owner exchange PSU with wrong model. as i know Native Linux we do have eeprom which need STB. so i suggest you follow the wires of 5V on the mainboards sockets are they connected to circuit or not !!

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

are you saying now if you just plug the PSU in wall socket with out main board plugged in.. PFC boosted and you have 12V on the socket and the main cap +380V???

so what will u9301 of power saving will do ?? did you checked all 3 Opto are fine no one of them are shorted?

no.
if now just plug the PSU in wall without main board
we get 12v ok
and no pcf boost volts just 330v.
when main board connected the boost voltage returns to 380v
i have checked the 3 opto and their components
as you can see in this jpg
there are no components fitted for 5v supply on psu so u9301 does not exist on this version of the psu

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

are there any tiny fuses on the mainboard to check out?

yep checked those

[Diah]

Re: philips 65PUS6162/05 dead no sby led

with regards to the legend on the psu there are no components on the board for 5v

are you saying now if you just plug the PSU in wall socket with out main board plugged in.. PFC boosted and you have 12V on the socket and the main cap +380V???

so what will u9301 of power saving will do ?? did you checked all 3 Opto are fine no one of them are shorted?

[nomoresonys]

Re: philips 65PUS6162/05 dead no sby led

are there any tiny fuses on the mainboard to check out?

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

with regards to the legend on the psu there are no components on the board for 5v
unlike most other psu designs the 5v is not produced on the psu
the only dc supplies from the psu are: 12v
and b/l supply which i expect to be around 30v
this is why i find it tricky to force on the psu
the 12v is unswitched and is always present when mains applied ,the 3 pins that are used to control the psu state are :on-off, dim, and ps-on.
when the tv works normally the main board produces the above voltages

now the fault i have is the 12v fed to MAIN board does produce on the test points shown in manual ,5v sby ,5v, 3,3v 1.5v these are on coils: l701, l704. l702, l803

[Diah]

Re: philips 65PUS6162/05 dead no sby led

all yours messurments are at wrong pins lable.. you will never have PS-ON 3V if there are no STB V. you may have STB 3V not PS_ON but there are short / open on MB. so it didnt start.

[nomoresonys]

Re: philips 65PUS6162/05 dead no sby led

it shouldnt be too hard to powerup the powerboard stand alone, can you get a better focused picture of the map/legend of that connector or write out the description like pin 1 +5v or whatever it says?

[diif]

Re: philips 65PUS6162/05 dead no sby led

There wouldn't be any change if you let it cool down. 200c isn't hot enough to melt anything and cooled down, any expansion has gone.

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

WOW you must be a mind reader .just tried that with s/station up to 200 deg for 5 mins then let it cool to room temp sadly no change
i know the main board is type :715g-8709-moe-b00-005n
theres a number for sale listed with correct model number but board number not exactly the same .are the philips boards identified by the white paper label or the printed numbers on the board perhaps they have to match the screen panel numberas well?

[nomoresonys]

Re: philips 65PUS6162/05 dead no sby led

yes makes sense, if ps-on never changes and if you get nothing from on-off pin which is backlight on off, more than likely a mainboard issue, did you try heating the mainboard processor with hairdryer, or cooling the processor, then see if it works for a while.

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

yes i understand ,i just need help /advice how to turn on psu and check if b/l volts are working
then i can replace main board
or repair it possibly replace micro mt5802 vgej
with confidence that psu is good
when i use the 3.3v supply to force on psu theres no sby volts as that is provided by the micro hope that makes sense thanks

[dskall]

Re: philips 65PUS6162/05 dead no sby led

Ps-on has to change state from standby. Whether from high to low or low to high.

[jimbofz]

Re: philips 65PUS6162/05 dead no sby led

thanks but tried that first .
i have found the correct cct

[nomoresonys]

Re: philips 65PUS6162/05 dead no sby led

maybe start with the easy stuff, check all the diodes and resistors if you have'nt already.