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
Kedves Kollégák és Fórumtársak!
Hozzám került a fenti Pana kistévé amely feszültség alá helyezést követően elindul egy pillanatra majd leáll és a készenléti led villog folyamatosan. A villogás kb. egy másodperc szünetekkel ismétlődik és folyamatos. Hibás alkatrészt nem találtam, mindent végigmértem a tápban és a sorvégfokozatban. A bekapcsolást követően a tápfeszültségek is rendben lesznek arra a rövid időre míg le nem áll.
Találtam szervízkönyvet itt a tanyán de ha van valakinek ötlete a készülék hibájának kiderítésében örömmel fogadom!
Üdvözlettel: Zoltán.
Sziasztok!
Most hozták hogy nincs kép rajta, de csíkok azok viszont vannak rajta. A T-con-on a feszültségek megvannak, de képet nem ad a tv, de hang az van. Most kijelző, vagy T-con adhatta meg magát, képet is teszek fel róla.
This elderly monster arrived with the error “ 4 blinks “ which the manual suggests is a power board fault
There are TWO power boards and a standby power board inside
On removing rear cover there were two swollen 220uf caps on the standby board, sadly replacing them the 4 blinks remained
Swapping the two power boards over[ as they look identical , gives a “ 2 Blink “ error , the limited info in the manual suggesting that the fault is on the lower board [ main 2 ]
Both boards have a PFC voltage of around 380 volts at switch on before the relays click out
I have done cold checks on both boards and there are no obvious differences
As the manual has only a block diagram of the power supply it’s difficult to be sure of values / voltages
Has anybody seen or worked one of these or similar beasts and managed to diagnose the problem
Thanks for looking
Regards Ken