Samsung 32" LCD TV le32R86 BN41-00813e BN94-01472K

[LPs1978]

Hi all,
I'm trying to fix my LE32RB86 LCD TV.
I changed all caps on the power supply board but the TV still has problems.

When the TV is cold it takes 20 minutes to start before correctly shown the image. In this 20 minutes what you can hear is just noise and the red led continusly blinking and the blu light under the samsung brand switching between on and off.

What I understood is that if I heat the CPU board with an hairdryer the TV starts quite immediately.

Do you have any idea about what I can check on the CPU board?

I attach some picture of board.

Thanks,

Luca

[Alastair E]

Re: Samsung 32" LCD TV le32R86 BN41-00813e BN94-01472K

On the Mainboard--

(Assuming its a Bordeaux-Plus)--marked on the top by the universal interface socket

There's a Large tin box. (NOT the one with antenna socket on,--The other, larger one) You'll need to remove the cover, and under there next to a large processor-chip, there's two smd 1000uF 10V caps. Cant miss 'em they are the only two 1000uF inside that box.

--These will need replacement.

I use standard through-hole parts, usually Chemicon or Rubycon low-impedance types 16V 1000uf to replace.

You Have to refit the tinwork cover--as it forms the heatsink for a few chips, so the caps need to be laid down by side of the chips, or use proper smd low-impedance or poly/os-con caps....

[LPs1978]

Re: Samsung 32" LCD TV le32R86 BN41-00813e BN94-01472K

On the Mainboard--

(Assuming its a Bordeaux-Plus)--marked on the top by the universal interface socket

There's a Large tin box. (NOT the one with antenna socket on,--The other, larger one) You'll need to remove the cover, and under there next to a large processor-chip, there's two smd 1000uF 10V caps. Cant miss 'em they are the only two 1000uF inside that box.

--These will need replacement.

I use standard through-hole parts, usually Chemicon or Rubycon low-impedance types 16V 1000uf to replace.

You Have to refit the tinwork cover--as it forms the heatsink for a few chips, so the caps need to be laid down by side of the chips....

Thank you.
I'll give it a shot and I'll be back to you.

[LPs1978]

Re: Samsung 32" LCD TV le32R86 BN41-00813e BN94-01472K

On the Mainboard--

(Assuming its a Bordeaux-Plus)--marked on the top by the universal interface socket

There's a Large tin box. (NOT the one with antenna socket on,--The other, larger one) You'll need to remove the cover, and under there next to a large processor-chip, there's two smd 1000uF 10V caps. Cant miss 'em they are the only two 1000uF inside that box.

--These will need replacement.

I use standard through-hole parts, usually Chemicon or Rubycon low-impedance types 16V 1000uf to replace.

You Have to refit the tinwork cover--as it forms the heatsink for a few chips, so the caps need to be laid down by side of the chips, or use proper smd low-impedance or poly/os-con caps....

Thank you. I changed both 1000uF caps and all is ok now.

[jiMacOS67]

Re: Samsung 32" LCD TV le32R86 BN41-00813e BN94-01472K

One more THANK YOU!
I have a LE32R86 with noise in screen and sound for 5-10 secs when power on.
Thing got worst by time.
I changed the capacitors on power unit.
No result
until
I read your post!
I change the caps in the CPU board and everything is ok!

THANKS again!

Dimitris

[kourkouras]

Re: Samsung 32" LCD TV le32R86 BN41-00813e BN94-01472K

On the Mainboard--

(Assuming its a Bordeaux-Plus)--marked on the top by the universal interface socket

There's a Large tin box. (NOT the one with antenna socket on,--The other, larger one) You'll need to remove the cover, and under there next to a large processor-chip, there's two smd 1000uF 10V caps. Cant miss 'em they are the only two 1000uF inside that box.

--These will need replacement.

I use standard through-hole parts, usually Chemicon or Rubycon low-impedance types 16V 1000uf to replace.

You Have to refit the tinwork cover--as it forms the heatsink for a few chips, so the caps need to be laid down by side of the chips, or use proper smd low-impedance or poly/os-con caps....

I had a startup problem, like snow and made 3-4 reps until the TV was working properly, I changed the 2 1000μf / 10v capacitors that are next to the cpu and all OK. Thank you very much .