Toshiba 42H81 42" Rear Projection Television "tube tv black box" Questions

all 3 of them light up? Focus/screen control box is in front of TV behind front panel Turn color off then adjust all 3 tubes to where you have a black and white looking picture, now turn color back on

...TV is turned on, a large black block covers the screen. Audio and everything else works. Try turning off the text box function of the closed caption decoder. Just clean the picture tube screen ...

...tv turns on shows picture then blinks blue a few times and then shuts off....stnadby light blinks 7 times...whats the problem Its either blue tube or bad componet on blue CRT board hertes how to know ...

...bottom of the screen. it is very dusty in side i cleaned the dust, then tapped on the two little black boxes that have like a sparkplug wire going to the tv tube its been 3 weeks and still works

tube labeled rfc-8 which i thought went to the back of the tv with the wire clipping on the side of the tv. I may be right with both of them but i am getting sound with absolutely no picture. THe menu

...Tube Lenses of dust&dirt Just in case Post me your Model and Chassis Number it will be on back of TV some RCA Focus&screen drive Block maybe in front of TV if so remove front bottom panel ...

...tube needs screen voltage adjust. Open fornt or back of TV and look for a black square looking box with adjustment knobs. Look for red screen adj and slowly turn rt or lft until lines just disappear. ...

...tube. My tv would turn on blue for a few seconds then shut itself off because the blue tube was getting too much power. I turned down (counter clock wise) the screw that corresponded to blue tube and ...

TV. Remove front bottom panel behind it is a small black control box top controls are focus controls for R/G/B and Bottom 3 controls are your screen drives adjust one at a time turn off G/B adjust red

...TV and what can I clean inside and how? Also, where can I find a replacement lamp and how can do I do that? Remove back see if you can get to tubes top lenses clean all 3 from dirt/dust/ After ...