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Anyone ever do one of these to a CRT?

Seems like the set has this jungle IC which will be where the RGB lines
for the OSD are needed for the mod:

https://pdf1.alldatasheet.com/datasheet-pdf/view/13342/PANASONIC/AN5304NK.html

Am not sure what the line would be that tells the chip to turn the OSD on. Apparently there
is a line if its 1 volt or more, it activates the OSD, if zero its normal video.

Also I think there must be a sync line tapped into which is bought out to the rear of the set,
with the (3) RGB lines / jacks but not sure where that would be tapped into?

I am gonna use BNC jacks, not the scart connector.
There are some youtube videos about RGB modding and lots of topics on the shumps
forums but so far it seems no one has tried this with Panasonic.

 

Szevasztok.
A fenti tipusu TV bekapcsolása után csatornaváltás csak az adoott csatornaszám távirányitón történő beütésével lehetséges.
A csatornaléptető gombok használatakor a készülék mindig ráál a 141-es kódolt csatornára és onnan léptetve elmegy a 146-ig
majd cirkulálva ugyanez.A müsortartalom oldalra kapcsolva ott sem müködik a fel-le léptetés. A TV hátoldalán lévő
cstornalépető gombot használva ugyanaz a jelenség. Megköszönném szives tanácsaitokat.
Üdv.

Manufacturer: Panasonic

Type: TX-L42ETW5

Chassi: LA35



Hello everybody,

I could determine or measure the following with the device:

Device does not start anymore, stand-by LED lights red when device is plugged in and flashes red as soon as an IR command (key press) is sent via the remote control. Voltages of power supply STB 5V and signal LCD_TV_SUB_ON come from A-board. Power supply starts, supplies P15V and SUB1.1V, 1.5V, 1.8V, 3.3V, 5V, HDMI3.3V and USB5V are generated on the A-Board (stand for about 2.5 seconds). Then signal LCD_TV_SUB_ON goes low (voltages go away to STB 5V) and after about 2 seconds back to high (endless). What is missing is the voltage PNL12V which is switched on by PANEL_VCC_ON2. PANEL_VCC_ON2 always has a low signal and does not change its state. Power supply also provides for the 2.5 seconds the 24V for the backlight. Clocking of LCD_TV_SUB_ON starts immediately after plugging in the mains plug (also without IR command). SOS error code is not output. The over-voltage circuit in IC 5000 pin 7 also does not respond. Attached is the timing diagram from the technical training of Panasonic where I have drawn until when the boot process behaves normally.

In my opinion a mistake on the A-board? Does anyone have a tip?

greetings

Andi

Kedves kollégák! A távkapcsoló szétszedése után, meglepődve láttam, hogy a nyák és a gumilap között valami zsír szerű anyag van. Ez gyári állapot? Mi ez, egyszerű szilikonzsír, vagy valami egyedi cucc? Vagy esetleg egyszerűen beleöntöttek valamit? Elég siralmas állapotban van az egész távkapcsoló, ezért szeretném átmosni alkohollal, de ha ez a kenőcs gyári megoldás, valamivel pótolnom kell.