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Replaced power supply on RCA la30rq and no power

Posted by Anonymous on

3 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SD Tech
  • 14553 Answers

SOURCE: 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

Posted on May 29, 2012

yutianyunren
  • 848 Answers

SOURCE: 32 inch rca getting power, but wont turn on

32 inch rca getting power, but wont turn on? This trouble maybe power supply or inverter boards is defective.
first you can test the voltage of the multr,and then check which part is defective.From Wisiny.com can find those parts
if you have any question,please let us know email:service@wisiny.com.thanks,we sincerely hope we can help you!
you can also check this boards whether suit you:
CQC08001026140 RE46LK1300 Leke LK PI320402A Power Supply Backlight Inverter

Posted on Nov 18, 2014

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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

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1 Answer

We have an rca l42fhd37 and its power light keeps blinking


Tv power supply board might have dying capacitors parts like bulging or puffing ups on it tops.That the board where the power a/c cord plug into it.U have all the tools and can do basic soldering and understanding basic electronic?Check the power supply board replaced dying capacitors parts.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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if you know the compoment parts that need replacing yes if not order the whole replacment power bord from rca call there service parts number give them the tv model and they will be able to send you the entire replacment part

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