technika 42-2030

[sordids999]

got this tv stuck in standby checked psu voltages very low on further testing unplugged the lvds cable from main board tv backlight comes on,so tested fuse on tcon seems ok so looking for help here pls

thanks

[flocko]

Re: technika 42-2030

Would think if this has the T.MSD3067.68A main board it has a bad eeprom, But could be Wrong, do not try to reset this as it will not work and could do more damage, if the main is of that above the eeprom is the one at U10 Flocko

[sordids999]

Re: technika 42-2030

ok i now have backlight after removing tcon to check fuse but now have a orange standby light but still no picture ive attached the voltages im getting
thanks for the reply flocko the main board is 17MB38-1 290110

thanks

[sordids999]

Re: technika 42-2030

ok upon reseating the lvds cable i know have backlight and a picture but when i turn it off via the buttons on the side it turns off but i now have a orange and blue flashing standby lights and you cant turn the tv back on unless you unplug the tv

[tom66]

Re: technika 42-2030

Check each end of the T-con fuse to ground for shorts.
Use the 2000 ohm range, power to the TV unplugged.

[sordids999]

Re: technika 42-2030

im not sure if i have 2000ohms on my meter ?

[tom66]

Re: technika 42-2030

What range do you use to test fuses with power off? Use that.

[sordids999]

Re: technika 42-2030

i used the 200 ohm range to test the fuse unless i done this wrong

[sordids999]

Re: technika 42-2030

if im testing it right then when i check for shorts im getting no reading

[tom66]

Re: technika 42-2030

OK, looks like on yours it is marked 2K, so use that.

[sordids999]

Re: technika 42-2030

the tv backlight will not come on until disconnect the lvds cable from the tcon then all is fine

[sordids999]

Re: technika 42-2030

@tom the tcon is LC420WUN-SCA1 6870C-0310C i have a spare but its LC420WUN-SCA1 6870C-0310A would it be ok to test ?

[tom66]

Re: technika 42-2030

We need to see if your panel is shorting the T-con out, so a few more tests first. Should panel be OK it should be OK if all connectors are the same.

[sordids999]

Re: technika 42-2030

Ok mate so what's next

[tom66]

Re: technika 42-2030

Use the 2Kohm range. Put the black probe on the case. Red probe each end of fuse. What readings do you see? (Allow meter to settle for 10 seconds.)

[sordids999]

Re: technika 42-2030

im getting no reading tom just reads 1. and thats using the 2Kohm

[tom66]

Re: technika 42-2030

OK, can you try powering the set on with the T-con disconnected, but the top panel ribbons removed?

If it powers on - you may have a shorted panel - your choice to put in a new T-con as it may be damaged.
If it does not power on as before the T-con is likely the only fault.

[sordids999]

Re: technika 42-2030

ok tcon disconnected and panel ribbons removed from the T-con and yes it turned on

[tom66]

Re: technika 42-2030

Hmm :/ I think that may be a bad panel there. You can try with only one ribbon at a time if it has two.

[sordids999]

Re: technika 42-2030

ok tried each ribbon still the same but now with both ribbon cables disconnected all im getting is a orange and blue standy lights flashing