In the service convergence mode, I can line up everything but red. The
red would adjust at first, but not much. Now when I enter the service
mode the red lines come on, then fade and disappear.
Should I
replace the convergence board (Samsung BP95-00415C) or should I be
working on the ICs STK394-250 (B4F17 and B4F19 on top of ICs)? If it is
the ICs what fuses should I be replacing also? I'd rather not replace
the enitre board >.< I'm a poor college student.
I can email the service manual with circuit diagrams if needed.
Thanks!
Ck 3 low ohm resistors 2.7 ohms they will be on same board as ICs.
SOURCE: Akai/Samsung PT4299HD Convergence Problem
Try resoldering the pins on the ICs first. If that fails to resolve the problem, change the IC responsible for RED. You should be able to determine that from the service manual. In that area you should also see either fuses or low valued resistors that feed the STKs. Check those as well.
Let me know if you need further info.
Dan
You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
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Fixed!!
I replaced the ICs and fuses. Then something else on the board blew and the tv wouldn't come on at all.
So I decided to replace the entire board.
Samsung BP94-01289A ASSY PCB MISC-PWR DEF;DP, HCP424
Found it on ebay for $110 after shipping.
Don't order this from partstore.com. They kept backordering it... I canceled my order, and found this one cheaper anyways.
Before replacing make sure everything in service menu is at original values.
I still had to fiddle with the manual convergence to get the colors right. In the regular menu, disable auto perfect focus. It's worthless.
Since I had to look everywhere to find all the info I needed here's a summary of what I did.
Total money in TV $190. Not bad for a 42 in HDTV!!Try to align convergence manually (mute-1-8-3) *don't hold down mute, just press them in succession* Do red first, then blue, then green. Work from the center out. Mute the colors you are not lining up! Makes life easier.
Don't fiddle with service menu if you don't have to. Don't do it without the service manual at all!! You can seriously screw yourself over. If you need it, google 4226samsung.pdf.
IIF THE CONVERGENCE WON'T ADJUST in the service convergence mode, just replace the entire board. It'll save you time and frustration. No special tools needed.
Don't open a tv unless it has been *UNPLUGGED* for several days at least. Capacitors stay charged for a long time, and tv capacitors carry a very dangerous amperage range. It's enough to do serious damage! Mine had been unplugged for 3 days, and I still got a tiny shock from bumping a screwdriver somewhere it didn't belong.
If anybody needs help, feel free to email me
snttgc @ mst . edu
I don't know a lot, but I can tell you what I tried, and what worked for me!
Thanks to everybody who helped me!! My new TV is gorgeous!
That picture sucks: Here's a link to a bigger version of the service convergence menu controls:
http://img105.imageshack.us/img105/3618/...
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