How much life does a recap job add to a TV?

[Pentium4]

I bought a fairly cheap TV, it's an Emerson 39" so not the best brand in the world but not the worst. I'm going to recap it in hopes it will last longer without issues. I'm replacing all the Jamicon and Su'Scon caps, they're ALL rated at 85C!!! I also increased the voltage on all the 25V caps to 50V. I know the rest of the components probably aren't the best. The big caps are nichicon. Think the recap will make much of a difference? (In the pic the originals are still on the board)

[tom66]

Re: How much life does a recap job add to a TV?

No need to increase the cap voltage though, that's one thing they get right. But 85°C???

Bad caps kill TVs in 3-5 years. Sometimes bad caps which outlive most expectations will last as long as good caps -- but it's rare. Good caps, I still have equipment with switching power supplies that are 25 years old with Chemicon and Nichicon, no problem.

[mockingbird]

Re: How much life does a recap job add to a TV?

Is it just me or does that PSU look underdesigned?

[tom66]

Re: How much life does a recap job add to a TV?

It is not just you. The heatsinks are pathetic. Four diodes instead of a bridge. Barely any output capacitance. 85°C caps (apparently.) Looks to use a two-transistor circuit for the standby power.

It's built to bring down the in store price, then die in short order.

But it does use Nichicon caps! In the primary. Where they are under less stress than where they are REALLY needed.

[Pentium4]

Re: How much life does a recap job add to a TV?

I increased the voltage cause that's all I had were 50V caps with that capacitance Yeah the heatsinks are pathetic indeed. Good thing it will be running in a cold room (60F) most of its life. Should I replace those 470uF caps with 820? Might help a bit. Look at how long some of the leads are!!!!