Question about Pioneer SD-643HD5 64" Rear Projection Television

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Blows fuse 303

Have same problem whats the fix.

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Tv's really dont Blow fuse's unless you have an electrical charge overload.
1 Transformer 1 capasitor 3 resisters from the color cannons arcing to gether...ok 355.00 to fix or so

Posted on Nov 21, 2008

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Fuse blows when plugged in


I assume it's the fuse in the TV that blows. You more than likely have a bad or shorted low voltage power supply. Probably not worth fixing with the cost of parts & labor.

Oct 06, 2012 | Projection Televisions

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I replaced the fuse and the tv worked for nearly 20 minutes then it blew again....


FL231. FUSE.... The RCA ITC222 chasis has a common problem. and it not all that difficult to repair. Does your rca projection tv have read blue and green shadows? Does it have bowing in affect on the top and bottom of picture? when you turn it on does some thin red green and blue line bow in from the top then go away. The main question to determine if you have the fl231 fuse problem is if you go into customer menu then setup do you have the "CONVERGENCE' option. If you do not. then i suspect you have this problem. In the manufactering of these sets Lead free solder is used. now there is great debate over the use of lead free. connection tend to be more brittle. cracks develop around the solder connections of the high voltage flyback transformer. this very small crack set up oscillations in the cuicit with a 400 milliamp fuse. THis fuse cant take it. When this fuse blows the processor then does not know its a projection tv with three projection tubes. it thinks its a crt tube tv. and crt tube tv dont need "convergence" so it removes the convergence from the set.

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.
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
7 RESOLDER FLYBACK CONNECTIONS 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'

on Nov 19, 2008 | RCA R52WH73 Projection Television

1 Answer

I no longer have any Red color. Only yellow and blue. I've fixed a problem with a fuse on the deflection board. That fuse kept blowing so I re-soldered the FBT and it worked for several months. Now...


The most likliest cause would be a issue with the RED CRT drive board around 35.00 from www.tvrepairworld.com it could also be an issue with the RED CRT itself but thats doubtful as usually the set will shut down if the CRT itself has an issue.

May 09, 2011 | RCA HD52W66 Projection Television

1 Answer

Sony 51 inch pico fuses keep blowing. tech looked at and cant fix,fuses would last for a day or two, When the tv is cold, is when the fuses would pop I do not think he knew what he was doing, Can this...


Which pico? Its possible you have a convergence chip failure that is causing it to blow.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 11, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Tv only stays in standby mode


Replace Fuses 302 5amp and 303 5 amp Resolder all poor connection on power supply board and Replace Both STK ICs they are big black ics STK392-180s is best ICs Call Mats 1-800-628-1118 This should have you back to watching TV again.

Sep 19, 2009 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

FL231 Concergenc Fuse blowing


Check the ballast. Also make sure that it is plugged into a GROUNDED surge protector!

Jan 06, 2009 | RCA D52W23 52" HDTV CRT TV

1 Answer

My sd-533hd5 keeps blowing the 5 amp 125v fuses


Yes! it sounds like a power supply problem! or the flyback in the main board needs replaced ( part is in the $70.00 range

Dec 12, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

Hitachi 46ux20b


You have a short thats blowing the fuse. More than likely the Horizontal output or regulator. I recommend if your trying to fix it yourself to get the service manual for your model at the following link, they will email the manual to you and that will qualify you for free tech support so they can help you with what to check and how to check it, they will help you get your set working again.
http://servicemanuals.vstore.ca/

May 29, 2008 | Projection Televisions

4 Answers

Can't get full power on


I have this exact same issue; search engine took me here. I have been experiencing this problem for about a year now. When you power on, the RED standby light goes out, the power light turned GREEN, you might hear a small pop sound, then the RED standby light goes back on. YOU HAVE BLOWN A FUSE. My problem is this is occuring much more frequently now and I'm going through fused like crazy. So I'm looking for a long term solution. To replace the fuse, turn off the standby power switch on the front. Unplug the power cable. Open the back panel. All logic and power modules are on the bottom of the cabinet. Therer is a large power module in the middle. In the middle of this module are 3 fuses. The one that typically blows is the one in the middle. It's a 5 amp fuse, but double check the rating before replacing. Good luck, Mark

Aug 05, 2007 | Pioneer SD-643HD5 64" Rear Projection...

2 Answers

Blown fuse over and over


you need to solder all the connectors and plugs between the 2 boards

Mar 05, 2007 | Toshiba 42H81 42" Rear Projection...

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