Vizio JV50p - Turns on then clicks off - No audio or picture

[tester_matt]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

You were right MAGIC..

Not sure why that pin is getting so hot but it melted the new solder and then the pin (lead) pushed itself out of the capacitor.

I am having trouble finding the replacement on the net. Is one brand better than another or should I look for OEM replacement and use PILKON?

Attached top view of the burn and the bottom.

Steps for repair?

1.) Remove bad capacitor - Find replacement (where to purchase?)
2.) Clean board in damaged area with alcohol swabs
3.) Solder new capacitor in place - (Is there a certain grade solder to use that can withstand this residual heat?)

[CapLeaker]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

you got it! use flux too. try Digikey or Mouser for parts. Silver Solder has a higher melting point than the regular stuff, if you wish to use it. make sure all the black stuff is GONE!

[tester_matt]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

Thanks CapLeaker..

I see the 1600v but not sure on all the other stuff? Do I search for mmkv 384 or 56n?

[tester_matt]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

Seems to be a hard cap to find. Both Mouser and Digikey did not have and would be back ordered 7+ weeks.

ordered - http://www.digikey.com/product-searc...88?k=BC2000-ND

Just in case someone else out there needs the same part. Only difference is the lead spacing is 22.5mm on Pilkor and these are 27.5mm. I will have to bend each lead in slightly in order to fit. Keep you posted..

Thanks!

[tester_matt]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

Got the new part finally. I had to first clean the board and have attached the before and after pictures.

[tester_matt]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

I was suprised when I opened the new Capacitor from the package. The leads were very small and I knew it would not fit so I had to get a little creative. I am not sure if this is the correct method but was worth a shot sincce the OEM part is 8 weeks back ordered. I took the lead clippings from one of the new caps 3300uf and soldered it to the lead as an extension so I could make the new cap fit into the board. Please give me some advice if this was the wrong method in the event I come across this again in the future.

[tester_matt]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

Finally I installed the PSU and tested. I was very happy when the unit powered up correctly and I was a little nervous as to doing the IMAGE CLEANER setting again. Would it get too hot and melt my solder extension? I realized I couldn't have a screen name as Tester_Matt and not test the damn thing so I fired it up and let it run for about 45 seconds. No smoke and no smell. All is good and if something happens again... I know where to go for advice.

Thanks Magic and Bad Caps!

Matt

[nomoresonys]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

Congrats. Matt, well done,

[CAZ3]

Re: Vizio JV50p - Turns on then clicks off - No audio or picture

Set meter for 20v, plug in AC cord. PSU will make one loud click within 5 seconds, it will then click again within 10-15 seconds. It will now be in STBY mode. LED on frt of tv should be on, (unsure of color, mine turns orange in STBY).

If yours does not click twice then there might be other caps to replace.

This has been a very helpful discussion - thank you all.

I have replaced several caps (annotated in the attachment), when I plug the ac cord in, it seems like both relays are clicking at the same time. All voltages are good except Vs about 2V and Va around 0.7v.

Which caps should I look at now - if any? Is there another component I should be looking at? I have pulled both relays, tested them the reinstalled.

Thanks for the help!