Question about Hitachi 36UX01S 36" TV

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Need info wont turn on

It started with a line across screen so i pulled it a part and soder the vert chip now when i plug it in you can here that it wants too turn on but dosent will the tv not come on if the vert chip is no good if i put too much heat on the chip could this cause the set not to too turn on so if i pulled the vert chip out of the set should it still come on or not ?i have not tryed yet
thanks

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The set will not operate with out proper vertical signal/deflection. you may have bridged pins together when resoldering. use a 25w or 35w soldering iron so as not to lift copper traces from pc board. always use solder wick to remove old solder and DO NOT keep on pad to long. mch

Posted on Feb 20, 2009

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I have a Mitsubishi VS-5077 the screen has gone black, it started out with the darker colors going green, I was having to boost the britenees, than a line would flash vert. across the screen, now no...


You definitely have bad solder grounds. I have repaired a few of these. You will need a TV tech pull the boards out and resolder them. The worst board would be the one on the left [signal board, has rca jacks. rf connector]. And they may as well solder the second board. You will have a restored TV when completed. Thanks for asking and show a few hands of support!

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TV TURNS ON,LINES ACROSS SCREEN THEN TURNS OFF BY ITSELF


sounds like a vertical problem, usually you'll see one white line across the screen, but one I worked on would come on and the bottom half of the picture was gone and there were lines across the top of the screen.

If you know how to solder & can find the vertical output chip then you could try resoldering the pins. If this doesn't fix it then it needs new parts.

Mar 08, 2010 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

The TV has a thin horizontal line across the screen. Sometimes the line has color and sometimes the line is white. Everything else seems to be working (i.e. sound, channel changing, game hookups)....


you have a vertical output problem,take something insulated and prod around board and see if pix starts to flutter,then you could have a "cold-solder" joint,otherwise its more than likely a capacitor between the vert driver circuit and the vert output circuitry,

Sep 12, 2009 | Standard (CRT) Televisions

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20in Magnavox.A 2in black bar at top and 2ins of fine lines under


yes you got vert foldover best bet buy a new tv . you can fix it but if you replace the vert anp and the assorted caps and IF you still have a problem in the power supply in a really short time (1-2 hours) you will burn out the amp again , and blow 2 caps and a zener diode all over a regulator problem that showes it self when ever it wants too .... out 35.00 in parts and 2.5 hours labor right back where i started ....trust me you dont want to open this can of worms . if you have it done except to pay between 100.00 -200,00 for the repair and ask them to run the set for a day or so before you pick it up

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2 Answers

Vert deflection problem


You are correct about having a dry or leaky capacitor that is causing those lines to show on the top of the screen.
Check the caps with low capacitance like 1uf, 10uf, 47uf, etc.
No quicker fix for this one until you change the capacitors.
Hope this helps.

Mar 14, 2008 | Philips 32PT6441/37 32" TV

1 Answer

Tosjiba cn32g90 no picture or sound


Timm,What you have Is Vert Failure,Toshiba is Noted for Bad Conns On the Vert Ic,Pull the Back off and Gently tap with a NonConductive Inturment and watch the Sceen Look for Heatsinks and Tap on those,If you know,or you caqn solder do so ,Do run the tv for a long time with no Vert or it will Cause BURN IN in the Phophurus

Jul 15, 2007 | Toshiba CN32G90 TV

1 Answer

Still no picture, but there is sound


If you are getting static on screen you dont necessarily rule out the FBT, but if there is a fusible resistor by the FBT that is blowing it may be supplying current to the vert IC, the IC may be shorted internally or externally, check your connections and try replacing IC. Also check the pump up cap and if it is powered off the FBT the rectifier diode.

Jul 09, 2007 | Toshiba CZ32V51 32" TV

1 Answer

JVC AV-27790 - single horizontal line


Since Intermitant always inspect the vert ckt for bad solder connections. If not replace the output IC they're cheap and most likely the problem If you still have lines on the top or bottom I would replace all of the electrolytic capacitors in the vert ckt also. Without much test equipment rebuilding the whole little ckt is the best way to go.

Apr 24, 2007 | JVC AV-27790 27" TV

1 Answer

Picture squnches into a thin line in center of screen


this set is known for cold solder connections on the vert output as well as the b+ supply line comming from the flyback xformer that supplys the voltage to the drivers. It could also be the vert output capacitor, The two waveshaper caps in the predriver stage of the vert, the filter cap off the flyback or the vert drive b+. Without going in and getting a schematic it will be hard to say. sets like that unfortantly these days are throwaways. NO NO NO dont throw the set at me I did mean that way!!! Its the cost factor of repairing getting the parts as well the the service diagram. it all adds up.

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2 Answers

SONY KV-27FV310: UPPER HALF OF SCREEN IS BLACK


You have a vert sweep problem and unless you know how to trouble shoot this cuircit bring it to a pro. I found out mostly in these sets that the vert output IC is bad.. Also sometimes the b+ filter cap off the fly is leaky and made the IC to fail. Another thing is Im surprised to hear you got a pic with the vert failure and a bright line in the pic!! This could be a big problem when the sets fixed so dont run it too long like this. It could burn a line all the way across the screen and you will see a dark faint line in your pic because of this. BE CAREFULL!!

Mar 25, 2006 | Sony FD Trinitron WEGA KV-27FV310 27" TV

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