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PANASONIC TX-21JT4P

TV - EPROM
Type: (RAR)
Size
210.0byte
Page
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Category
TV
EPROM
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    PANASONIC TX-21JT-4P TX21JT4P TX 21 JT 21JT4P TX-21JT4P
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Relevant TV forum topics:
RGB Mod in Panasonic CTP-2780SF

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.

 

Steve Hearns
Technotronic Dimensions, VT [USA]
WWW.TECHNOTRONIC-DIMENSIONS.COM

Panasonic TX-29PS12P ch.:CP830FP torz kép (MEGOLDVA)
Sziasztok! Én nem tudom mi van a héten, de amihez nyúlok mondván rutinmeló csak a szívás lesz belőle. Üf. azt mondta, hogy összement a kép. Bravó két kondi max. ic-is plusz a fokozatok ESR-es ellenőrzése és kész. Hát nem. Eleve a sorvég tranzisztor csont zárlatos 100uF 50V a eltérítő ic-nél púpos. Biztos sokat kínozták és ezért szállt el a "bu". 10 db. elkó, KH. javítva, ic, sorvég cserélve TV bekapcs a kép látható a fotón. Eltérítőtekercset lekaptam nem látszik égésnyom. Mérve a sor 0,9R kép 13,7R sajnos induktivitást nem tudok mérni. Cső típus: A68QFN93X104N Magyar gyártmány a cetli szerint. Impulzus kondikat mértem cserélgettem. Az eltérítésnél ellenállásokat diódákat és a zenereket ellenőriztem. A B+ 130V és ennyi a ref.ic is. Pár másodpercig nyúztam, de nem melegedett semmi. Egy másik eltérítőt kerestem volna, de persze, hogy nincs ami hasonlítana ellenállásra. Főként a kép tekercs mert max. 8R körülit vagy 5,5R találtam... Kérdések: -Szokott ennek a csőnek a tekercse vacakolni, vagy inkább sorkimenős? -A trafó BSC290175M nem találok az általam ismert helyeken. Tud valaki beszerzési forrást? -Esetleg van amit kihagytam? Köszönöm a hozzászólásokat! A képeltérítő tekercs egyik fele volt megszakadva 1 menet erejéig. Szétbontottam az eltérítőt és a belső felén az a gyári sárgás trutyi ami idővel barna lesz marta meg a rezet. Mindezt úgy, hogy egy fém lemezt ragasztottak a műanyag testhez egy szöveterősítésű ragasztóval, amit átmart ez a "csodaanyag" Letakarítva kijavítva a szakadást hibátlanul üzemel...pedig a kép alapján inkább zárlatnak tűnt.
LCD Panasonic
Van valakinek elado alaplap (Mainboard) LCD Panasonic TXL26C10E.
Panasonic TX-L42ETW5 Device does not start anymore, stand-by LED lights up red, no SOS error code
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
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