Samsung TV Whoas

[ggenovez]

Re: Samsung TV Whoas

Thanks!

BTW, I noticed some of the caps are higher voltage than others, and on my board they're all the same. Where do the higher voltages go?

[tom66]

Re: Samsung TV Whoas

They can use different capacitors at different points of time during the manufacturing lifespan of a TV. Could be that a 470uF 25V capacitor from manufacturer A was cheaper than a 470uF 16V capacitor from manufacturer B. Typically they have a set list of acceptable substitutes and build it using the cheapest parts, usually using something like "MRP" software (manufacturing/resource planning.)

[Bassman]

Re: Samsung TV Whoas

Also be sure to check the cap on the ballast. A couple of the models have issues with that cap going bad if caps on the power supply went bad.

[ggenovez]

Re: Samsung TV Whoas

First off I want to thank everyone for all their help.

I have replaced the caps on the power board, and did a continuity test prior to installing the board to ensure all my solder joints where good.

Unfortunately, I'm still having trouble, and I am to blame since I don't think I gave enough information.

My original message stated that the TV took a while to boot up, but after the TV went TU, I neglected to mention that I could see the lamp still turn on but the Green light would continue to flash.

After replacing the caps, it still has the same trouble. Lamp comes on but does not go any further.

Bassman, I have not check the ballast. Can you give me further instructions on checking that out?

Any other advice would be greatly appreciated.

Thank you.

G

[ggenovez]

Re: Samsung TV Whoas

Should I open a new post on this one?

[tom66]

Re: Samsung TV Whoas

If the lamp is lighting, but you get no image, it can't be the ballast. Do you hear the colour wheel spinning up?

[ggenovez]

Re: Samsung TV Whoas

Thanks Tom, Yes we do hear something spinning up.

[tom66]

Re: Samsung TV Whoas

I don't know much about DLPs, but there's a DVI connector on most of them used to connect to the DLP chip. Do you have a DVI monitor spare? You could plug it into the DVI output the main board generates to see if it is producing video.

[ggenovez]

Re: Samsung TV Whoas

Thanks Tom, Unfortunately all the connections on the back of my TV are output.

Any chance it could be the lamp hour meter? what is the max and would it be a similar problem?

[tom66]

Re: Samsung TV Whoas

Inside the set, there's an internal DVI connection, you can try and use this.

[ggenovez]

Re: Samsung TV Whoas

ok. I'll check it out.

But if the TV came up, would it not make that music indicating it's running? I don't get that far.

[tom66]

Re: Samsung TV Whoas

It probably would... which would definitely point to a main board fault.

[ggenovez]

Re: Samsung TV Whoas

So am I SOL?

Any way to test the color wheel (still original) ? or the main board?

[tom66]

Re: Samsung TV Whoas

Main board is a replaceable part.

[ggenovez]

Re: Samsung TV Whoas

Got it. Now I need to find a source....