Panasonic 29" TV, Model TX-29GF10X

Has a red tinge over the complete picture.
No green is showing. Just red and blue.

Measured the KB,KG and KR (assuming these are the cathode voltages) on
the CRT board with it connected and disconnected

KB =120VDC
KG =195VDC
KR =195VDC

Also removed the board from the CRT and did the same test and same
voltages apply. Going to swap some of the output transistors but am
pretty sure they ok.

Where to look next???

Thanks

TEX

TEX wrote:
Panasonic 29" TV, Model TX-29GF10X

Has a red tinge over the complete picture.
No green is showing. Just red and blue.

Measured the KB,KG and KR (assuming these are the cathode voltages) on
the CRT board with it connected and disconnected

KB =120VDC
KG =195VDC
KR =195VDC

Also removed the board from the CRT and did the same test and same
voltages apply. Going to swap some of the output transistors but am
pretty sure they ok.

Where to look next???

Thanks

TEX


Did some more. Swapped the transistor gun outputs (KR and KB) and the
colours changed. So the screen that normally is blue when you get no TV
signal is now red. Proves that the tube should be sweet. Can see a bit
of green in this config, but very low.

So it obviously is a signal issue. This is where it is out of my league.

TEX

Trace the lines back from the crt board to the main board, you will probably
find a open driver transistor in the video circuit. Check the voltages right
at the video processor ic and the drivers.
"TEX" wrote in message news:1154058004.886587@ftpsrv1...
TEX wrote:
Panasonic 29" TV, Model TX-29GF10X

Has a red tinge over the complete picture.
No green is showing. Just red and blue.

Measured the KB,KG and KR (assuming these are the cathode voltages) on
the CRT board with it connected and disconnected

KB =120VDC
KG =195VDC
KR =195VDC

Also removed the board from the CRT and did the same test and same
voltages apply. Going to swap some of the output transistors but am
pretty sure they ok.

Where to look next???

Thanks

TEX


Did some more. Swapped the transistor gun outputs (KR and KB) and the
colours changed. So the screen that normally is blue when you get no TV
signal is now red. Proves that the tube should be sweet. Can see a bit of
green in this config, but very low.

So it obviously is a signal issue. This is where it is out of my league.

TEX