I have a samsung 55". The Red went out of alignment. I had a tech come out and repair it. It replaced the IC's - didn't fix it. He then said the board is bad and they don't make it anymore. I went online and found a replacement. I replaced it and still nothing. I just downloaded a manual - I could only find the manual for HCN5527W, figuing it should be the same tv.
Any suggestions.
Help
Kevin
I just checked the pip. It is the same as the rest of the set. So I am assuming it is a convergence problem. Further note. There is an arch of black on top and bottom, along with a green and red stripe that follows the same arc, only offset a bit. Could it be the 5v coming out of the power supply? I would figure that the tech would have checked that when he came out, but you never know.
Thanks again,
Kevin
You do have a problem with the plus and the minus voltage going to the convergence board. There are circuit protector fuses on the CG-Amp board. They are labeled on the board as FD101S and FD102S. These should have continuity across both of these. If these are good, go into the main power supply and look at the plus and the minus power sources and look at those fuse on that board as well. Follow the repair flow chart on page 5-3. Good luck
I couldn't find anything labeled FD101S or FD102S. There is a DZ102 and DZ101, they check out ok. I could only find 1 fuse in the entire TV. The voltage going to the CG amp is 3.8, and the 20v output is reading 3.9 and 0. I don't have much experience with televisions. I worked mostly on lasers and amplifiers. It seems to me to be a power supply problem. Any thoughts.
Thanks,
Kevin
They are there man. Do you have the service manual on this TV set? There are lots of fuses in this set. Like I have said before. They do NOT look like fuse, they look like black or green resistors.
Hi, I am working on an Samsung HCN5537W because the convergence is off. When I tried to re-align the convergience I can move the RED up and down but it will not go left and right. I also get a yellowish hue along the right side of the screen and the data will not save so the Perfect Focus will not work. The message I get on the Perfect focus is: No Sensor Data. If I unplug the set the corrections made to the convergence is lost.
I checked fuses FD101S and FD102S and they check out OK. I thought I might check here before ordering new IC chips. Any thoughts to help me?
EB
Mine is the HCN5529W Samsung model. Quite similar problem all colors messed up like 3D. On top of the convergence issue, the blue colors smears pretty bad the you cannot see the crosshairs on the customer convergence menu. Here aret the steps I took so far: I pulled the blue tube, drained, cleaned and replaced the coolant. I also changed both STK392-040. Put it all back together, powered up and did the perfect focus feature. The Green and Red aligns perfectly but the blue(And by the way, the blue color smearing got fixed by replacing coolant)would not align. It had a bowtie effect-top/bottom bowing. What do I need to look at next? Please help!
where did you get the new ic's from?you need to use original replacement ic's not cheap replacements
Larry
I got the IC's at ACME Electronics. Are they not good vendor for IC's? Tonight I also tried to measure the voltage that goes to the convergence board. I wasn't sure how to actually test the +20 and the -20. Correct me if I'm wrong. I unplug the cable from the convergence board and using a multi meter, tested the 4 pins (pin 1-20v, pin 2 and 3 ground, pin 4 +20v). I touched the meter's black lead to pin 2 and touched the red lead to pin 1 and I get 0 volt reading. I then did same thing to pin 3 and 4 and gets around 49 volts. Did I do this test right? Should I be getting -20volts on pin 1? and =20volts on pin 4?
Man, I'm almost giving up on this repair job and tempted to buy the whole convergence board from samsungparts store but hate to get it, install it and end up with the same problem. Larry, please advise.
no put the Black lead on the meter that is the negative lead on the meter on the metal around the picture tube and use the red one then to measure your voltage please.Good Luck1!!!!!
Larry
If I do what you have said, what normal reading should I get on the pins leading to the convergence board? + or -20volts? If no power or lower voltage, should I then be hunting for pico or fusible resistors that are bad?
I also forgot to ask on my last post. This is the first Samsung IC the has a resistor/fuse looking thing soldered on IC pins 3 & 2 and pins 12 & 13. Same on both ICs. Looks like pins 3,2 & 23,13 are bridged together by these resistor/fuse looking thing. I tested for ohms and get nothing and continuity nothing. Maybe I should've installed the new IC's without reinstalling these things.
Yes are there any resistors that look scorched? if there are take out one end and check the resistance of them please.
Larry
No burnt resistors. pulled out couple of 150 ohm resistors that I suspect but they checked out between 150-152ohm readings. What about the resistor/pico fuse looking thing that's bridged between the pins of the IC's? Never seen them before connected to the pins of the IC's underside of the pcb.
Before buying a totally new conv. board, my plan is to do what you've suggested and pull one end of as many resistors I can see and test them. My previous question about voltage going to the conv. board. Should there be + or - 20volts going in? If not, do I need to look for fuses or fusible resistors from the main power board that feeds to the conv. board? I'm stuck with this repair.