Logik l32digb20

[sordids999]

Re: Logik l32digb20

This is the problem flocko one minute the backlight will flash constantly or only one flash then goes into standby seems to have a mind of its own
i can use the side button to turn on the tv on but once the backlights stop flashing you cant use it,instead you have to turn the tv off and on

http://cpc.farnell.com/texas-instrum...63?Ntt=tlv1117 (33p - 3.3V type)
http://cpc.farnell.com/texas-instrum...117/dp/SC08267 (44p - adj)

so go ahead and order these ? im collecting the resistors later tom

[tom66]

Re: Logik l32digb20

If you get resistors from Maplin, may as well wait before ordering the LDOs.

[flocko]

Re: Logik l32digb20

Yes will be easy to power up the inverter you can do it at the plug to the Av you dont have to do Pson as you can still power on the side buttons, just BLon and Dim on the 4 wire plug of the Av to jump with the resistors to 5V standby, and see if it work the inverter, if it does then it the av board

[tom66]

Re: Logik l32digb20

I would jumper the PSON too because I suspect main board could be causing the problem. Not sure though.

[sordids999]

Re: Logik l32digb20

OK tom I've got a the resistors ready when you are

[tom66]

Re: Logik l32digb20

OK, so first lets get PSON working.

- Disconnect the connector between main board and power board, on the main board end.
- Connect the resistor between the 5V STB and PSON pins. (Poking the pins in the connect holes works best.)

At this point, once you plug TV in, you should get 24V and other voltages. You should not get any backlight.

Are the voltages steady?

[sordids999]

Re: Logik l32digb20

Tom do you mean the 4 pin red and black cable pins ?

[sordids999]

Re: Logik l32digb20

Sorry found it voltages are steady tom

[tom66]

Re: Logik l32digb20

OK, now unplug set.

For the connector going to the inverter, you want to leave that plugged in. But, you want to run one resistor between 5V main to BL ON and one from 5V main to DIM. (Order doesn't matter; BL ON and DIM are the green and brown wires.)

Now, when you plug set in backlight should come on and stay on. No picture will appear. Screen will either be black or white. Does it flicker?

YES - Power board or inverter board or bulb panel arc - need to do further tests

NO - Main board

[sordids999]

Re: Logik l32digb20

OK tom first resistor connected but not sure where the second one goes to I've added pictures

[flocko]

Re: Logik l32digb20

un plug 4 wire connector with the green and brown on form Av board same again one resistor in green and one in brown to 5V backlight should come on when set plugged in Flocko

[sordids999]

Re: Logik l32digb20

Well if this is wired up right I now have a flashing backlight

[sordids999]

Re: Logik l32digb20

Ok done what flocko said now I have backlight on

[tom66]

Re: Logik l32digb20

Not flickering?
24V measure OK still?
Note: it'd be a good idea to unplug connector for blon/dim from the main board.

[sordids999]

Re: Logik l32digb20

no flickering and 24 volt is steady

[flocko]

Re: Logik l32digb20

i did say unplug the 4 wire connector from the Av. Ok now to prove only BL on and Dim from main board defective, if you go back to the start pull the resistor out off PS on and plug that back in main board but leave the BL on and dim connected to the resistors and 5v but unplugged from Av, you should now be able to turn on the set on from the side buttons or remote and get backlight

[sordids999]

Re: Logik l32digb20

yes flocko and tom plugged it back in now the backlight comes on tv,also menu now showing on the screen and i can use the buttons on the side

[flocko]

Re: Logik l32digb20

Good ,then i think change the regulators and you will be fine sorry it took 5 pages to get here but that some time happens, any way order your regulators and let us know how it goes i will keep my fingers cross that all will be fine Flocko

[sordids999]

Re: Logik l32digb20

http://cpc.farnell.com/texas-instrum...63?Ntt=tlv1117 (33p - 3.3V type)
http://cpc.farnell.com/texas-instrum...117/dp/SC08267 (44p - adj)

ok so order these ?

and thanks alot flocko and tom

[flocko]

Re: Logik l32digb20

good i think now change the regulators and it will be fine, sorry it took so long to get here but that sometimes happens,go back over the post and read how we said to change them and be careful with the heat,let us know how it goes Flocko