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Have a rca mcr66r400 tv set found a blown fuse on the +145v line replace fuse but still tv set wont turn on! hot is good

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A risistor burn out and cannot reconised the number the two sides of the Tv screen is closing in

Posted on Jul 18, 2011

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32 inch rca getting power, but wont turn on


I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.5_29_2012_3_02_02_pm.jpg
left one is good and right one is bad.


5_29_2012_3_02_44_pm.jpg
Arrows point to bad ones

May 28, 2012 | RCA 32la30rq 32 Tv Black 720p Lcd - - RCA

1 Answer

RCA Projection TV : D52W27D Connector BP120 on Power Board ?


BP120 is not used in that model its simply a empty socket that board is used in other versions of the ITC222 chassis in which some use that plug . But your model doesnt use it. Check the fuse on the AC main board which is right next to where the power cord plugs into that board. If the fuse is blown its most likely the flyback and HOT which are causing the blown fuse. If the fuse is good then the deflection board will need replacement. www.tvrepairworld.com has replacement parts and circuit boards for that chassis and also free tech support is available.

Feb 23, 2012 | Televison & Video

2 Answers

47 inch vizio blown fuse


i am having the same problem and my power light wont even turn on so i think it might be tht power fuse. Is tht what was wrong with urs?

Dec 18, 2011 | Vizio VO47LF 47" TV

2 Answers

Standby relay clicks on and off continusly. Tv won't turn on. I check my diode and transistor who control the standby relay and it is fine. I also replaced the flyback and I still in the same situation....


Hi there!

You have an obvious error state on the unit. You may want to try and remove the Line Transistors to check for voltage first. In the region of 145V(between base and collector. If the set then stays in standby you may have a vertical error. Also check 5V rail to the processor and suspicious looking components like caps. Good Luck,JUS004

Mar 05, 2008 | Sony KV-27S15 27" TV

1 Answer

Rca 27f630t


Hi,
It takes a star driver if I am not mistaken to take the back off probably two different sizes one for the top bottom and sides and one size for where the rca jacks are.. I only recommend checking the fuse...if blown never put foil around it. Takes a 4 amp. 5 amp would be ok. Dont go over this. If the fuse is good you should take to a good tv repairman. If blown and blows the fuse you put in take to tv repairman. Anything past this is highly technical. Hope you have a blown fuse only.

Dec 30, 2007 | Televison & Video

1 Answer

TV will not turn on when power button is pushed.


check the main fuse in the tv. test it with a multimeter, not visually. if its the thermistor that blew the fuse, it is very difficult to see the break in the wire. replace if blown. if unit blown fuse again withing a couple of weeks replace the thermistor in the degausing circuit. good luck.

Jan 09, 2007 | RCA F36665 36" TV

1 Answer

NO POWER, Yes blown fuse.


Was this the 220 ohm in the power supply??? and if the 5 amp blew right away then it probably took out the bridge rectifyer with the power surge that comes alog with hurricane damage to the power lines as I used to live in florida and repaired lots of sets damaged from storms!! After you check the bridge rectifyers I would start looking to find any other shorts. First measure across the ac line with the fuse replaced but not plugedf in . If its shorted check what I mentioned before if its good after you replace the shorted parts you maybe in luck. need more assistance go to sams photo facts download a schematic and we will trouble shoot this together if you post it here so i can look at it. good luck

May 02, 2006 | RCA P52929 52" Rear Projection Television

11 Answers

No power


If you're NOT still under warrantee you should at least open the TV and look for a blown fuse near where the power cable enters the set. A lot of times you can buy replacement fuses at a local electronic or hardware store and they're easy to replace. Check the fuse. If it is blown, it will be obvious and make sure that the set is unplugged before replacing it. If it blows again, or if it is not blown, your problem is probably in the 'X' volt regulator and you will need professional help with the repairs. You can also check the board where the components are mounted and resoled any that look bad. Brief power outages may cause the TV to turn off on its own. If you are using a surge protector, try connecting the set directly to the wall outlet. In your case it could caused by a blown fuse, a leaky diodes or a bad solder joint at the horizontal drive transformer. All can be replaced at a local electronic or hardware store and they're easy to replace If this does not correct the problem, you may need to have your TV serviced. good luck!

Dec 26, 2005 | RCA Scenium HD65W20 65" Rear Projection...

1 Answer

Set will not turn on


If you're NOT still under warrantee you should at least open the TV and look for a blown fuse near where the power cable enters the set. A lot of times you can buy replacement fuses at a local electronic or hardware store and they're easy to replace. Check the fuse. If it is blown, it will be obvious and make sure that the set is unplugged before replacing it. If it blows again, or if it is not blown, your problem is probably in the 'X' volt regulator and you will need professional help with the repairs. good luck!

Nov 28, 2005 | RCA F19436 19" TV

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