Samsung LN40A330J1DXZA 40" LCD no power

[8cuda]

Black screen, no power and sound. Slight flash on the right side of the screen when the power button is pressed.

Should all the capacitor be replaced or just the bulged caps(see 2nd photo)?

I'm new to fixing TV. I have fixed iMac G5 bulged capacitor on the logic boards and power supplies.

Randy

[Zalinar]

Re: Samsung LN40A330J1DXZA 40" LCD no power

Hi. Great photos!

If you replace the bulged ones, that should fix your problem. However, it is a good idea to just replace them all while you have it open and apart. Even if they are not bulged, they may still be dried out from age and heat. They just don't show the obvious signs of failure.

Hope this helps! This is my first reply here! Yay!!!!

[8cuda]

Re: Samsung LN40A330J1DXZA 40" LCD no power

To clarify, will these Rubycon caps from the site would be a good choice?

1000uF 25v ZLJ 10mm 20mm

820uF 25v ZLK 10mm 20mm

470uF 25v ZLJ 10mm 12mm

47uF 50v RX 8mm 12mm

[Phaihn]

Re: Samsung LN40A330J1DXZA 40" LCD no power

they would suffice as long as they fit whare they need to go.

[8cuda]

Fixed: Samsung LN40A330J1DXZA 40" LCD no power

I replaced the two bulged caps, as I had a few extra 1000 uF 16v from my imac G5 power supply days.

The Samsung is working, saved the TV from the landfill/recycler

Thank you Zalinar & Phaihn, will monitor the TV and may change the rest of the caps upon failure.

[budm]

Re: Samsung LN40A330J1DXZA 40" LCD no power

Good job, but I would have replaced them as a set, since bad caps will not filter out the AC and let the AC feeding the circuits, that can cause damages (such as over heating of the components) to the circuits before the caps completely failed.

[Phaihn]

Re: Samsung LN40A330J1DXZA 40" LCD no power

.

[tom66]

Re: Samsung LN40A330J1DXZA 40" LCD no power

Why are you posting a picture of a plasma?
That is more than likely loose connections on the Y-buffers, but put it in the right thread please.

[Phaihn]

Re: Samsung LN40A330J1DXZA 40" LCD no power

Why are you posting a picture of a plasma?
That is more than likely loose connections on the Y-buffers, but put it in the right thread please.

arge looks like i missread the titla i was looking for my thread...