Question about Hitachi Televison & Video

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Projection TV built in 1989 model CT4521k Serial #w91001124

The TV keeps switching channels. No matter what channel you are on it switches back to channel 2. It appears that something is heating up in back of the TV. We have taken the back off the TV and recently put a bowl back by the tuner with a couple of frozen bottles of water. With the back off and the coolness of the water it seems to slow the switching of the channels. These bottles are sealed and the water cannot come out. We would like to solve this problem permanently.

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  • Master
  • 561 Answers

Another band-aid cure would be a small fan. But it sounds like you need a repairman to replace a component or module that is overheating.

Posted on Jun 05, 2017

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5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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ladywinn
  • 5138 Answers

SOURCE: pioneer projection tv model sd-p404

In menu go to cable/then press auto programming see if this fixes your set.

Posted on Jan 31, 2008

clusterfx
  • 67 Answers

SOURCE: TV remote control sensor

yeah,it's very easy.

pull out the bottom part(where the speakers are) - they are held with plastic hooks on the inside, they are =on the left and right side and a few at the top. just pull one end and the rest will come off easily.

remove a couple of screws holding the buttons assembly and the bottom of the screen.

slide the screen carefully upwards and when you reach about half way then it will come off.

behold...the sensor is infront of you, it's a small pcb with a light sensor on it. (if you see sensors at the very top or side...they are probably focus sensors)


sure it's not the remote?

Posted on Feb 23, 2008

  • 1 Answer

SOURCE: rear projection tv picture problem

I have a sony kp-48s65 projection tv. I have three lamps in back a red a green and a blue. when turned on the sound always works
timer standby light blinks steady at 1 pace Once in a while the picture will just come on and work fine it may work for 1 hour or 10h min then the picture goes out . What can i do. People say lamps but when the picture is on and working the three lights behind work fine . its like whatever powers the lights isnt working
Unplugging and plugging back in and waiting usually brings it back on. For so long . When it is on the screen I can see hard bright green and red the picture is really too red its ok but its hue is off or something Tv in good shape what do i do?

tv consumer

Posted on May 07, 2008

The Machine
  • 788 Answers

SOURCE: TV keeps changing channels by itself

Either the channel up or down buttons on the tv are most likely stuck.

Posted on Aug 07, 2008

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