Question about Mitsubishi CS-40307 40" TV

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I have a mitsubishi cs-40307 that never powered back on.

A thunderstorm caused the power in my home to shut off, after the storm everything came back on except the tv. tried the fuse and its not burned, checked the power cord and it seams to be all right. any suggestions.

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Try to check the horizontal output transistor if it is good,check up the power regulator

Posted on Jan 26, 2009

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My Mitsubishi Cs-40307 was subjected to a power surge from a damaged transformer on the alley pole. It will not turn on or show it is getting power. I opened and checked the main glass-tube fuse and it is...

there are 2 fuses thatcould have blown inside the unit. you could have fried the power supply as well.

The first thing to do is check all of the PN junctions(Diodes, Bridge Rectifiers) in the Main Power Supply

Then move to the smaller ones, including the germanium and zeners
spacer.gif 2009-10-01_091232_diode-ger.jpg spacer.gif spacer.gif View Full Image spacer.gif

Also Capacitors are notorious for failing. These are sometimes easy to spot, look for bulging tops:

spacer.gif 2009-10-01_091344_bad_cap.jpg spacer.gif spacer.gif View Full Image spacer.gif

If you still have found nothing, look at the bottom side of the board, near the large connections and discolored areas for bad connections in the solder:

spacer.gif 2009-10-01_091436_badsolder.jpg spacer.gif spacer.gif View Full Image

Oct 21, 2009 | Mitsubishi WS-65819 TV

1 Answer

Model CS- 40307 40 inch Mitsubishi TV will not turn on

continue to push power button until light turns green. verie rate of push and hold

Jul 15, 2009 | Mitsubishi WS-65819 TV

1 Answer


If I understand you correctly, you want to change the speakers to OFF... is this correct?
solution - UNPLUG THEM.

Jun 30, 2009 | Mitsubishi CS-40307 40" TV

1 Answer

Power was interupted to my cs-40307

not sure what switches your fiddling with but first thing is check your fuses are ok

May 02, 2009 | Mitsubishi CS-40307 40" TV

1 Answer

Mitsubisi tv CS- 40307 digital capable ?

If you are subscribing to cable or satellite TV, then the answer is no; they will continue to send an analog signal to your TV. However if you are using an antenna to receive your broadcast, then you will need a converter. Broadcast TV (over the air) has switched to a digital signal for most of the channels as of June 12th.

Feb 22, 2009 | Mitsubishi CS-40307 40" TV

1 Answer

Tv's stuck on the same channel.

Can you find the rest button on it and give that a try
gon on the web page for it.

Feb 01, 2009 | Mitsubishi CS-40307 40" TV

1 Answer

Mitsubishi tv 40" cs40307 vertical shrink problem

thats problem is only a lose connection,if you know how to used a soldering iron ,solder the vertical section of your tv.

Dec 21, 2008 | Mitsubishi CS-40307 40" TV

1 Answer

Mitsubishi CS-40307 push power button nothing happens no remote

that fuses was burned because there it is more problem to fix i recomand to go to one authorized service to fix that

Dec 10, 2008 | Televison & Video

1 Answer


surge can come in thru antenna circuit ck outlet with lamp. otherwise need tech.

Dec 02, 2008 | Mitsubishi CS-40707 40" TV

1 Answer

Help-Love my 40307

I hate to tell you but if parts are not available is not a good sign,consider buying a new TV and get it over with.

Sep 12, 2006 | Mitsubishi CS-40307 40" TV

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