I have a Hitachi 27FX28B.. when I turn the television on the picture is fine, within 3-5 minutes though - the picture compresses to a thin vertical line across the middle of the screen (audio is fine). The television is 8 years old.. what is the problem and is it worth fixing?
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Re: No Vertical Sweep
The verticle output iC or the b+ feed is going bad. To fix it your gonna need a multimeter and experience working with tv. Now to its worth??? do you like the set? Does it have all the fetures and fuctions that you liokeand how good is the picture? It shount cost ya more the 125 to 150 for this repair. Good Luck
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The set is prone to a few odd issues as well as some common ones.
If you follow power cord inside (ought to go to board mounted on right side wall) there are at least 3 black power relays on that board that are known to stick either open or closed---tapping on them will sometimes cause them to function again for a while---ie if power light does not go out etc.
If you have sound the set will be likely turning off or blanking all three picture tubes for a reason= no vertical sweep or horizontal sweep as that would instantly burn a mark on all three tubes--check the possible relay issue and let me know answers to the questions I have asked above.
I have worked on a lot of this model set and am familiar with it.
theres a bad capacitor off the sweep power supply or possibly in the main power supply. Most likly though it would be where i mentioned first. There are no user serviceable parts inside this set Unless your a repair person so best thing for you to do is call in a pro to assist you in this repair. Good Luck
ok you have a vert sweep problem and yes its probably connected to in a way to the "tap and fix" problem! Seems to be n intermittant connection on the vertical out put Ic or maybe even on the rgb convergence ic?? The total loss of sweep though tells me that theres two differant problems! Maybe and intemittant connection on the vert output Ic as well as bad connections on the convergence ic??.