Sharp LC-42SB45U POWER SUPPLY

[whatusername]

Hello i have this sharp tv with 1 bulging cap on the power supply tv showed classic symptom of bad cap by long start up time.. Anyhow the cap is a 2700uf 16v 105 deg and i went to order them wit a higher V rating but it seems i ordered 4700uf 25v 105 deg.. will i be able to use it or do i need to order the correct one?

[tom66]

Re: Sharp LC-42SB45U POWER SUPPLY

I would not use that capacitor, cannot be sure it will work.

[Pentium4]

Re: Sharp LC-42SB45U POWER SUPPLY

It would help if you listed brand/series of the original and replacement capacitor

[whatusername]

Re: Sharp LC-42SB45U POWER SUPPLY

ok will upload a pic now original it says capxon on it and its green and gold and replacement says KC its black with silver

I would not use that capacitor, cannot be sure it will work.

yea tom i was thinking the same thing but i read if its 1 u can get by

[tom66]

Re: Sharp LC-42SB45U POWER SUPPLY

I wouldn't use that capacitor even if it was right capacitance. KC brand -- likely generic non low-ESR so could be worse than original... If it works could just die in a month's time.

You could get this capacitor from digikey:
http://www.digikey.com/product-detai...2370-ND/613731
+$2.75 shipping

and it should be just fine.

[whatusername]

Re: Sharp LC-42SB45U POWER SUPPLY

ahh ok i didnt know brands made a difference.. so now i know there are cheap quality caps (kc) and good quality caps.. what are the names of good caps for future reference?
and how do u tell ESR from Non ESR?

[selldoor]

Re: Sharp LC-42SB45U POWER SUPPLY

Also if there are any other capxon caps of the same series you should seriously consider changing them. One bad - probably all bad.
That is not a usual value for a startup cap either. Its usually a small one on the primary side 50v 47uf but it can vary.

Panasonic FR FM and FC series or Nichicon and Rubycon are considered good but you should buy from a good supplier as well.

[whatusername]

Re: Sharp LC-42SB45U POWER SUPPLY

Ok I ordered it Thanks again Tom

[Pentium4]

Re: Sharp LC-42SB45U POWER SUPPLY

Also if there are any other capxon caps of the same series you should seriously consider changing them. One bad - probably all bad.
That is not a usual value for a startup cap either. Its usually a small one on the primary side 50v 47uf but it can vary.

Panasonic FR FM and FC series or Nichicon and Rubycon are considered good but you should buy from a good supplier as well.

This. Those 47uF 25V look like CapXon KM. They do not do well on these hot boards, and since you're already ordering from Digi-Key you should order the rest to replace all the CapXon, then you will be able sleep well at night knowing you don't have to worry about other caps failing

[whatusername]

Re: Sharp LC-42SB45U POWER SUPPLY

ok i willl do that they are cheap enough anyway

[Pentium4]

Re: Sharp LC-42SB45U POWER SUPPLY

Let us know how it goes

[whatusername]

Re: Sharp LC-42SB45U POWER SUPPLY

Will do.. already got an email from Digikey with tracking number...man they are fast :-)

[whatusername]

Re: Sharp LC-42SB45U POWER SUPPLY

Update: caps came in yesterday. i installed them and tv is up n running. . thanks tom for the digikey tip and thanks to everyone else that chimed in...

[tom66]

Re: Sharp LC-42SB45U POWER SUPPLY

Glad to hear, enjoy the TV.