RCA CTC-11 CHASSIS NO VERT. DEFLECTION

7/21/2001 6:11:13 AMRichard Bozeman

The technical forum form won't come up so I'll post this here. Have lost vertical deflection in my RCA CTC-11 chassis. Single line across the screen. Replacment of the 6EM7(6EA7) Vert out/osc. tube did not help. Service-normal switch good; is there anything that would normally cause this that I'm missing? thanks

7/21/2001 9:03:08 AMNorm Leal

Hi Richard

Vert Osc/Output are the right circuits. Measure voltages on both sections of the tube.

Connecting a .1 mfd cap between grid of output stage and filament should show some deflection if that section is ok. This is for test only as picture will not lock in.

Norm

: The technical forum form won't come up so I'll post this here. Have lost vertical deflection in my RCA CTC-11 chassis. Single line across the screen. Replacment of the 6EM7(6EA7) Vert out/osc. tube did not help. Service-normal switch good; is there anything that would normally cause this that I'm missing? thanks

7/21/2001 8:10:19 PMRichard Bozeman

: Hi Richard

: Vert Osc/Output are the right circuits. Measure voltages on both sections of the tube.

: Connecting a .1 mfd cap between grid of output stage and filament should show some deflection if that section is ok. This is for test only as picture will not lock in.

: Norm

: : The technical forum form won't come up so I'll post this here. Have lost vertical deflection in my RCA CTC-11 chassis. Single line across the screen. Replacment of the 6EM7(6EA7) Vert out/osc. tube did not help. Service-normal switch good; is there anything that would normally cause this that I'm missing? thanks

After looking further I found a burned cap, C507. THANKS