Question about RCA F32450 32" TV

1 Answer

Focus Got the TV back from the repair shop. They replaced the transistor and flyback, now it's out of focus, so how do I adjust the focus? I can't even make out the text on the screen

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  • tw_Ohio Sep 03, 2008

    RCA F32450

  • tw_Ohio Sep 18, 2008

    Finally figured it out. The red wire for focus came undone. We took it back to the repair shop, got it home, tweaked it and it's fine.



    Thanks for the help!

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  • RCA Master
  • 5,138 Answers

Focus control is on the Flyback there is 2 adjustments one is screen drive other is focus turn it untill you have clear picture.

Posted on Sep 17, 2008

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1 Answer

How do you adjust the focus


The flyback transformer located in the rear of the tv, might have to take back off( usually some have holes to adjust from back). There will be two potentiometers on the back of the flyback. Top one is screen, bottom one is focus. Put a mirror in front of tv and adjust the focus potentiometer.

Oct 08, 2011 | Toshiba 32A43 32" TV

1 Answer

I'm trying to fix my 21 inch JVC TV, its on standby mode i detected the problem it was Horizontal output transistor, when i replace it with new one it work but after 24 days it got shorted again so i...


depending on circuit design in some TVs when flyback becomes defective then (1) only flyback gets deffective or (2) flyback & 1 transistor big in size fixed near flyback gets deffective or (3) flyback,big transistor & resistor or diodes or some times ICs will get deffective ..........so flyback replacement is compulsory + which ever components gets deffective ....... usually flyback gets deffective after 4yrs (between 4yrs to 12 yrs depending on TV brand & usuage ) .............so in your case along with horizontal transistor replace flyback also ..................... Remove that flyback from main board ? using marker make a mark (1 dot on knob & at the same line put another dot on flyback --- these 2 dots should be in same line ) on all the knobs on fly back ....now turn all the knobs one by one in anticlockwise direction slowly until it stops .... Then observe from the mark which you made before turning .. --- you will get an idea which knob howmuch it was turned in anticlockwise direction.... now take flyback to electronic shop & buy same type ( equivalent will not work )......at the shop itself check part number , number of pins & their position of old flyback with that of new flyback ----- everything should match 100% - nothing less nothing more .... it should be exact .... check many shops...now turn all the knobs of new flyback in anticlockwise direction very very very slowly until it stops....now fix it to mainboard very slowly & carefully....don't forget to connect red wire from flyback to TV TUBE ...again iam repeating don't forget to connect red wire from flyback to TV TUBE .... Now observe mainboard carefully whether any connector is not connected ....now connect only tv powercord & stay at a distance & switch on Tv for 2 seconds & then switch of immediately....during this 2 seconds TV gets on & led also gets on continuosly (won't blink) & there should not be any smoke or sounds on main board ...this confirms you have replaced flyback without disturbing other components & not shorted any joints..... so now again switch on tv ..wait 3 or 4 seconds ...led will be on but there won't be any picture ... Don't worry ....in the beginning you have observed howmuch knobs on your old flyback were turned in anticlockwise direction....remember..? see your old flyback again.... Now using suitable screew driver turn all the knobs on new flyback in clockwise direction one by one very very very slowly ...untill as it was in old flyback ( approximately ) --- remember TV is in on condition ... means high voltage will be there ... bymistake if you touch any part of the tv .. you will get very severe shock.... So be very very very carefull ..now while doing this adjustment observe what is happening on the screen - how brightness is changing ... Now switch off tv....connect signal ( antenna or dvd or cable..) & again switch on TV ....so now depending on brightness & clarity of the picture ..looking at the tv screen again you have to turn 1 or all the knobs on flyback either in clockwise direction or in anticlockwise direction very very very slowly ..once you start doing this adjustment practically then automatically you will come to know which knob should be turned . in which direction - & howmuch it has to be turned .... But remember this adjustment is very important .. Sometimes it will take 30mins to finalise the exact position.of knobs .. so take your owntime & finalise the exact position of those knobs..then switch off tv ..fix back the tv cover .. then switch on tv again ....that's all .......100% GUARANTEE again your tv will work normally ....vishnuswamy_23.jpg

Aug 31, 2011 | JVC Televison & Video

2 Answers

I have a 32" GE regular crt TV. Everything was fine and when I woke up the next day it would not turn on. Keeps making a clicking sound every few seconds like a solenoid trying to close..


Sounds like a probable shorted Horizontal Output Transistor (hot) Hopefully thats all. Sometimes the flyback will fail as well. If your not familiar with electronics I would recommend a tv shop repair. If its just the HOT transistor average repairs are 75-110 depending on your location.

Oct 17, 2010 | GE 32GT740 32" TV

1 Answer

Same problem. GE Model #D52GW12 Working fine then just caught on fire. Removed the back and found a part that said "Focus and Screen" on it. Can this be replaced or do you have to replace the circuit...


the flyback... very common for the ge version of the rca it222 you may also have to replace the horizontal output transistor. i have found at the shop the flyback and the transistor ussally all that have to replace

Apr 29, 2009 | GE D52GW12 52" Rear Projection HDTV-Ready...

1 Answer

TV DOES NOT TURN ON


sounds like you may have the flyback arching. Ussally when we replace the flyback. at the shop the horizontal output transistor is shorted. so usally replace both. now i would no recommend this repair for a non tech. the flyback can be tricky. but if your a tech or have experience in electronics definatly possible. parts about 60 dollars. at our shop this repair ussally runs 150 to 175

Nov 29, 2008 | RCA HD52W59 HDTV Projection Television

1 Answer

I have a Zenith C27A24T the picture is out of focus.


If there is no other problem, he probably touched the focus adjustment in the back of the set. Open up the back and locate the flyback transformer (part with large red wire coming out the top). There will be 2 adjustment controls on it. One should be labeled screen, the other focus. Adjust the focus until crisp.

Dan

Sep 04, 2008 | Zenith C27A24T 27" TV

1 Answer

TV out of focus


Its possiable you have a Bad flyback transfomer or could be that all the pinns on FBT needs to be resolder and focus control on Fly be adjusted.Call your local shops for CHK out fee.

Apr 06, 2008 | Sharp 27F543 TV

4 Answers

Rca 27v414t shut off by it self after a feww seconds.


Most likely the TV is detecting an internal problem with it's circuitry and is shutting itself off to prevent further damage. You'll need to have a professional look at your set to determine exacly what's going on. Aside from leaving the power cord unplugged for five minutes, then pluggin back in and trying it again, there's nothing anyone can do from here. It may work, but it's a long shot.

Hope this helps, and please rate my advice, good OR bad.

Good luck!

Feb 04, 2008 | RCA 32V524T TV

1 Answer

Green is going, going, gone?


I would suggest check the the secondary side of the power supply for around 130VDC if that voltage is found to be lower than 120VDC I would suggest to replace CP80 with a 100 mfd@250 vdc. Part # 218374
Check Globalsemi.com for these parts.

Jan 13, 2008 | RCA F36650 36" TV

2 Answers

Monitor repair


the neck board of the monitor needs tube replace it is corroded with carbon if you cannot get a replacementbuy a new monitor.but also check the flyback also it could be faulty replace it check www.dalbani.com for your monitor parts or repairworld.com,good luck.

Apr 26, 2007 | LG Flatron Ez T710BH 17" CRT Monitor

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