I'm having an issue with color separation on my RCA R52WH74 TV (colors separate into red, blue, green with a bowed 3D effect).
Searching for the problem on the net, I determined that the FL231 fuse was blown - so I replaced it. I also checked the DL231 diode which seemed ok.
Replacing the fuse worked and fixed the problem for about 4 days, after which the fuse blew again.
Is there anything else I should check on that board? Obviously, there is an overcurrent happening somewhere, and I hesitate to just keep replacing fuses.
Also, if you have a link to the service manual for this TV, that would be helpful.
Thanks for any advice,
Yes i replace that fluse fl231 all the time at the shop. at least two aweek. and the first few i replaced did the same thing. I would send it back to customer and i would get a call that the set had malfuctioned again and convergence gone. It was determined the reason this fuse blows is bad conections on the flyback transformer. The flyback is the big black component with the red wire coming out of the top. if you examine the connections on this component there will more than likely be a ring in the solder. this is caused by the manufacturing process known as LEAD-free solder. THis cause oscillations in that cuicit. like turning it of and on really fast. this is a very small fuse and cant stand up to this. so when you replace this fuse just simply RESolder these connections apply a little amount of solder to these connection. i am confident this will fix your problem.
Posted on Sep 20, 2008
Thank you for your last response to my question concerning the FL231 fuse that keeps blowing.
Two questions I have for you:
1) Is the "Convergence Power Supply Board" the same board that the FL231 fuse and the flyback transformer is located on?
2) My chassis is actually an ITC222A chassis, and the board I *think* you are referring to with the FL231 fuse is actually shaped differently and looks a bit different that the link you provide me at http://servicemanuals.vstore.ca/. So, I'm wondering if there is a different place I can obtain replacement boards for the ITC222A chassis.
Also - do you know of a way to get ahold of the service manuals and/or schematics for these boards?
Thanks for any help - you've been really helpful so far.
Rating: 88%, 2335 votes
The problem is related to the Convergence power supply board, which is shorting out and blowing fuse FL231. You will need a new Convergence power supply board to repair the Issue with the ITC222 chassis. You can get a replacement board at the following link.
no the board that has the FL231 on is the ITC222 deflection board. The other board is above the chassis in a seperate frame that runs across the set the convergence power supply is the board on the left above the board where the fL231 is. Yes the ITC222 and ITC222A are the same chassis. As for the service manual that site should have the service manual under the thomson category as the ITC 222 chassis is actually a thomson chassis made for RCA.
Posted on Sep 11, 2008
I NEED the instruction manual!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Posted by purpleligh... on
You can download the instruction manual in PDF format by clicking this link.
On the page which opens, click on the "Download" button to download and save the manual
Posted on May 30, 2010
MY RCA MODEL R52WH74 YEAR 2006 PICTURE STARTED SHOWING 3 D IMAGING IN RED BLUE AND GREEN ,HOW CAN I FIX IT ???
Posted by jodidthoma... on
What you most likely have is a convergence problem. The convergence circuitry is used to align your colors. What you describe sounds like that circuit has failed. Here’s a link to a decent video that will give you an idea of what is needed to fix it: http://www.youtube.com/watch?v=S6Wa8FvSz-s
Posted on Aug 30, 2010
my converter box is bad, can i fix it myself or what would it cost to fix?
Posted by jrroberts1... on
How can my converter box be fix what do I do or where can we go to get fix help me out please.
Posted on Mar 09, 2010
how to adjust the convergence on my RCA R52wh77 tv there is no convergence button on system anywhere. TV is only 2.5 yr old and I really don't want to pay $300 to have them come and adjust tube when I can buy new 42'' Plasma for $598 at Walmart
Posted by richard_l... on
you have to go into the menu,sometimes convergence is listed in the video section.
the chasis number is ITC222.
some had manual convergence then you have to adjust red onto green,blue onto green DO NOT MOVE GREEN
if it has autoconvergence activate it.do not do anything until its done.
Posted on Sep 18, 2009
fpa lock on
Posted by haigisrick on
Lock/Unlock Parental Controls
Selecting this option lets you lock and unlock parental controls settings
using a password.
If you do not lock parental controls, none of the settings for V-Chip,
Channel Block, or Front Panel Block will take effect.
If you forget your password, press the MENU button, then select Parental
Control (the password entry screen appears). Simultaneously press and
hold CH+ and VOL+ on the front panel for 8 seconds. Parental Controls
unlock and the Parental Control menu appears. You can enter a new
password by locking the Parental Controls again.
Front Panel Block
Selecting this option lets you block (disable) or unblock (enable) the TV’s
front panel. The remote still tunes to any channel. When using this as a
Parental Control method, remove access to any remote that is capable of
operating the television while you have the front panel blocked.
Don’t forget to lock parental controls after you change the status. If you
don’t, the front panel block will not take effect .if this don't work get back to me i've got manual good luck
Posted on Sep 19, 2009
I have an RCA R52WH74 that will shut itself off after 15 minutes or so. Picture is great so I don't think it's a convergence issue, but it will shut off, turn back on for 10 seconds or so and then shut off completely. If you let it set for an hour or so it will come on again for 15 minutes and then it's the same deal.
Posted by imadunatic on
Replace 3 capacitors on Deflection board its the bottom left hand side cp150 200uf 16v use 25v capacitor and cp114 cp120 in same circuit 220uf 35v. You will see cap cp150 if it is puffed up on top they are Bad. Call Mats Electronis 1-800-628-1118 Radio shack might have capacitors.
Posted on Dec 29, 2009
my tv has blue, red, and green lines on the screen...it has double images..it is a rca tv model number r52wh74
Posted by joebilly87 on
TO REPAIR... 1. Warning. this set can
generate leathal dangerous voltages even unplug do not attempt if you
have no experence with electronics.
2. Remove the back. there a number of torx 20 screws.
3. what you will see is a number of circit boards There will be one on the right and one on the left. the one on the right is the small signal board. the one on the left is called the power deflection board. it has a large black part with a big red or black wire coming from the top, this is the flyback.Next to the flyback on the right of it there will be three small rectangular componets tan or brown in color. these are fuses. the one in the middle is the fl231 fuse it should be labeled that right on the board.
4. getting to this fuse can be difficult. these two cuicit boards sit on a tray that is removable. to remove this tray it is pulled out and up. BUt watch the wires.loosen the wire tyes.
5 when you get the tray up the bottom side of the board can be accessed
you will now have to unsolder that fuse. one side of this fuse is under a plastic part of the tray. i have found the easest way is to cut away the plastic to get to it. if you dont want to do this you will have to remove the board. only remove half of the plastic brace
6. REPLACE FUSE RCA PART 259213 or you can goto radio shack and get a inline fuse holder and get the smallest glass fuse they have witch is .75amp witch is 500ma and all together cost about $5.00
7 RESOLDER FLYBACK CONNECTIONS or both ends of the inline holder simply heat up and add a little solder
8 reassemble set. make sure you examine the set for loose connections.
9 and remember "BE Careful'
Posted on Nov 28, 2009
I have the RCA model R52WH74 chassis ITC222A and i'm having the convergence problem with the 3D effect and picture bends in the middle. My question is to repair this problem do I only need to replace the fl231 fuse or the convergence board or the convergence power board or the dl231 diode or any combination of these. Also I've read to resolder the Flyback do you think this is correct? Thank you so much in advance for your help.
Posted by broketv311... on
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