Sylvania LC420SS8 shutting down on protect(?)

[budm]

Re: Sylvania LC420SS8 shutting down on protect(?)

If it has 3.3V output and the input is 7.2V, that means it has 3.9V across it. So it depends on how much current is flowing through the regulator, that power will have to be dissipated by the regulator. The only way to find out is to measure the current draw which means you have to the DC AMP meter between the output of the regulator and the load to find out if the current exceeds the spec or not.

[iKitsune]

Re: Sylvania LC420SS8 shutting down on protect(?)

If it has 3.3V output and the input is 7.2V, that means it has 3.9V across it. So it depends on how much current is flowing through the regulator, that power will have to be dissipated by the regulator. The only way to find out is to measure the current draw which means you have to the DC AMP meter between the output of the regulator and the load to find out if the current exceeds the spec or not.

I found another Funai-built set on a similar chassis: The slow-blink power LED is normal during power-on. The fast-blink happens when it would go solid, and I'm thinking it's a mainboard fault, since it happens when the other set goes to select the input. Oh well. Any thoughts on a good place to sell the panel? (I have no idea how to ship a 42" panel, though.)

[beanboy33]

Re: Sylvania LC420SS8 shutting down on protect(?)

Anymore news?

[iKitsune]

Re: Sylvania LC420SS8 shutting down on protect(?)

Anymore news?

Still propped up in my closet, current guess is inverters, but I'm not of a mind to go throwing a $70 set of inverters in it.

[zvaniel4o]

Re: Sylvania LC420SS8 shutting down on protect(?)

Do you still have it?

[zvaniel4o]

Re: Sylvania LC420SS8 shutting down on protect(?)

I changed one smt and one th diodes with mine... replaced - works like charm!

[lemo5617]

Re: Sylvania LC420SS8 shutting down on protect(?)

Which one of the smt diode did you replaced?is it on the main board?