I have a RCA D52W23 set. The Convergence went all wacky and I found on this site how to fix it by replacing the FL231 fuse. I replaced the fuse and about a week later it did the same thing. I have once again fixed the fuse and the TV is currently working correctly.
My question is, What is the cause of this fuse going out? Is there something else I should be looking at to find the cause of this fuse going bad?
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Your TV has convergence chips that need to be replaced by a tech. These keep tour red green and blue lights in sync with one another in order to give you a sharp color picture. When they fail your colors seperate.
You will have to remove the deflection board on the left and resolder the transformer connections. That is the item with the red lead coming out of it. You will find bad solder joints around it. After that you will see 3 small brown rectangle fuses on the top side to the right of the transformer. I believe it's the middle one that is probably open. You should check them with a continuity tester or ohm meter if you have one. Replace the bad one and you should be ready to go.
Go to menu then setup look for convergence if not on menu you have a blowed fuse FL231 will be next to FBT flyback transfomer on right side there is 3 in a roll small brown looking caps but they are fuses it will be the one in the middle.You can take a pair of plyers to pull off top they are all removeable and just snap back on.
i have found the reason for the fl231 fuse blowing is faulty solder connections on the flyback transformer is the main cause. I have came across only one bad signal board that cause this but this was very very rare 1 in 1000. This is a very specific fuse, .400 and it is recomended only to replace with exacte one. consult the fl231 problem in the tips and tricks section.
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.
yes, thats the replacement fuse for your set. However unless you have replaced the convergence power supply also chances are the fuse will blow again, as the power supply shorting is what causes the convergence to get out of alignment and it will then blow FL231 thereby removing the convergence option from the menu.
the rca itc222 chasis uses no stk the convergence is controled with transistors... the convergence amp board is located above the main signal board(green board)... it can be identified as the one with several heat sink fins on it. FL231 is related to convergence.. there has been a problem with this fuse when it blows the processor doesnt know it is a projection set so it turns it into a regular tube tv. Here at the shop we have found number one reason this fuse blows is poor solder connection on the flyback. So replace the fuse and reflow the solder connection on the flyback and around that area also the horizontal transistor and then see if that doesnt fix the problem.. if you have an more trouble ..... firstname.lastname@example.org