Re: Stumped on Samsung PN60E530A3F

As you can see I've only made 7 posts, so I am new to this as well. 10uf poly capacitor at 250 volts rated should be acceptable for all the blue radial lead capacitors. In the states, digikey or mouser are good sources. I don't know where to go in Canada. The capacitors will run you about 3 dollars each, it would be a good idea just to replace them all, there are 7 I think.

Re: Stumped on Samsung PN60E530A3F

When I replaced the c5046 and c5160 Vscan would rise to the proper voltage without chilling the board first. These are small capacitors and basic soldering skills should be sufficient to perform the work.

Re: Stumped on Samsung PN60E530A3F

I was able to complete the repair by replacing the smd, S18660BA, on the back of the board. I wasn't able to find any reference to the chip but I guessed it was a logic chip. Therefore on the data and clock pins the gate should be open when turned off. I measured a high resistance value across a couple of the gates and determined it was bad. I had another y main board from a different tv with this chip so I pulled that chip (which checked okay) and replaced the bad one. The y main pn i took the chip from is lj92-01958 and is for a 2013 model tv....

Re: Stumped on Samsung PN60E530A3F

Replaced c5046 and c5160 now the Vscan voltage turns on without chilling the board first. One issue down. I'm getting 5v at c5013 but 0.7 at c5133 and out to the logic board. Checked both caps good. Seems u5013 is getting only 1.1v so the problem is in that area.
I ran out of 10uf caps (there were 4 bad on the board) so I used a 10 uf electrolytic in one place that is in curcuit wit the logic chip to the lower y buffer board. I don't know if this would cause the problem or not.

Re: Stumped on Samsung PN60E530A3F

Okay, yep 14.89 volts.

Re: Stumped on Samsung PN60E530A3F

Continuing with troubleshooting, 15v_vscan jumper wire reads 180 volts. There must be a short in that circuit. The 15 volts back to x main board is okay. Additionally the 5 volts to the logic board reads only .7 volts. Seems just the y main board is bad. With the lvds connected to the y main from logic board the green led on logic board blinks every 5 seconds. Disconnect that lvds and it blinks every 1 second.

Re: Stumped on Samsung PN60E530A3F

I have a similar issue here too. I tried chilling the y main board and that brought vscan into the proper range. However it will only bring up voltages when the logic board is disconnected from y main board. Is there some test that will narrow down the issue logic board or a different circuit on y main? I can add that scv_out is 60 volts. Don't know if that voltage is correct. I checked u5003 okay and replaced the u5014 chip. C5162 checks at 9.42 uf.