Toshiba Projo 50A61. No video

[[email protected]]

This set has sound but no video, no OSD also. HV is present and tubes
light up, when I turn screens up. I am considering replacing Jungle IC
TA1222BN. Does anyone have any suggestions before I replace this chip?

 

[[email protected]]

Open resistor on the ABL line, pretty common. Little 1/8 watt job,
look at the schematic on the bottom side of the flyback going back to
the abl line.

David

 

[Ohger1]

Subject: Toshiba Projo 50A61. No video

From: [email protected]
Date: 1/9/05 7:54 PM Eastern Standard Time
Message-id: <[email protected]>

This set has sound but no video, no OSD also. HV is present and tubes
light up, when I turn screens up. I am considering replacing Jungle IC
TA1222BN. Does anyone have any suggestions before I replace this chip?

Have you checked for clock\data line activity and source voltages and signals
on this chip? There are way too many places to lose video on a TV of this
type.

 

[Leonard Caillouet]

Have you checked for clock\data line activity and source voltages and signals
on this chip? There are way too many places to lose video on a TV of this
type.

Agreed. I'd do some basic troubleshooting before assuming the chip. If you
have deflection and HV it is likely working.

Leonard