Luxor LUX-22-822-COB stuck in standby

[budm]

Re: Luxor LUX-22-822-COB stuck in standby

If the standby 5V and the 14.5V are steady (these two Voltages are present the minute the TV is plugged into the outlet, they are generated by the same transformer) then it has to be the control signal or those switches are not working properly, I have yet to get the answer as to those two STBY Voltages are steady or not.

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

hi budm
the +5STBY is steady but today i cant get any other voltages to work and thats with the PSU disconnected and connected to the MB

[budm]

Re: Luxor LUX-22-822-COB stuck in standby

hi budm
the +5STBY is steady but today i cant get any other voltages to work and thats with the PSU disconnected and connected to the MB

The 14.5V is also present and steady?

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

No 14 volt present

[ReeceyBurger123]

Re: Luxor LUX-22-822-COB stuck in standby

Heat the Psu see if it improves.

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

nope tried that reece

[budm]

Re: Luxor LUX-22-822-COB stuck in standby

No 14 volt present

That is strange because the 14.5V power supply is also an always on power supply and it is generated by the same transformer for the +5VDC.
May I ask what test point you use to test the 14.5V? At the Fuse F101?
BTW, Can I get straight shot pictures of the top and bottom sides of the board?
I am beginning to wonder if the diagram I use for the reference matched your board.

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

Pictures as requested

[dick_barton]

Re: Luxor LUX-22-822-COB stuck in standby

I think it may be the same if not very similar to the 17IPS17-2 pdf. I see there is a fuse on the underside F101.

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

I think it may be the same if not very similar to the 17IPS17-2 pdf. I see there is a fuse on the underside F101.

Can you point me to it i can not find it ?

[dick_barton]

Re: Luxor LUX-22-822-COB stuck in standby

Can you point me to it i can not find it ?

Sorry Sordids999 Can't find the fuse or the schematic?

[budm]

Re: Luxor LUX-22-822-COB stuck in standby

I see the F101 SMD with '0' printed on top, at about 1 o'clock of the blue stand off. Page 2 top left of the SCH.
https://www.badcaps.net/forum/attach...5&d=1461868563
BTW, diagram on my post #14 which DB gave the link to Elektrotanya.

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

sorry i mean F101 looking now on the board but cant seem to find it

[dick_barton]

Re: Luxor LUX-22-822-COB stuck in standby

Here it is. An SMD "0" resistor.

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

F101 fuse is not blown and also no voltage is coming from the fuse

[dick_barton]

Re: Luxor LUX-22-822-COB stuck in standby

Strange.????

Edit
Did you download the psu schematic given in an earlier post?

[budm]

Re: Luxor LUX-22-822-COB stuck in standby

That makes no sense since it is just the simple rectifier diodes and filter caps and choke.
Check the connection paths from the Transformer leg to the diodes, choke, etc.

[dick_barton]

Re: Luxor LUX-22-822-COB stuck in standby

If IC804 is down then you lose the 14.5V and 12V supply.

Edit
Or if the caps are down C822, 823, 826
Diodes D813 and the diode pair above it in the schematic.

[budm]

Re: Luxor LUX-22-822-COB stuck in standby

If IC804 is down then you lose the 14.5V and 12V supply.

IC804 (12V regulator/switch) is fed by the always on 14.5V.

I hope that the basic tests have been done in that section already such as checking to solder joints, rectifier diodes, inductor L810, etc.

[sordids999]

Re: Luxor LUX-22-822-COB stuck in standby

This what im saying i have intermittent voltages yesterday no voltages then later on i had 5v/12v voltages but now nothing ?