I did the test and got the 2.2 so i test the pico fuse and they are still open. so they say it must be my ic
Yes when either of the two Pico fuses F9A04 or F9A05 fail its caused by the convergence IC. replace the IC and both pico fuses should restore normal operation in most cases.
SOURCE: Samsung HCN4226 Convergence.
Did you remove one side of the resistors from circuit to check them? If you leave them in circuit a blown resistor will test good as it will read the resistance from the surrounding resistors. Usually its the 3.9 ohm resistors identified bu the bands orange,white ,gold and red. and also the 150 ohm identified by the bands brown, green, brown and gold
SOURCE: Samsung HCN4226 Convergence IC Problem.
The problem is likely to be the digital convergence board that generates the convergence signal that is amplified by the output ICs.
SOURCE: I just replaced the 2 ic chips (stk392-570) and
You have bias resistors close to the IC's, I would guess you have a few that have changed in value and therefore have destroyed the IC's again. Now you must start over again. The resistors will be very low Resistance and tolerance and they must check exact.
SOURCE: Convergence parts? What are the specific pico fuses and resistors
There are six 3.15 amp picos use 3.5 amp when replacing and there are two 5 amp picos on the G board the resistors if needed are 4.7 ohm 1/2watt
SOURCE: Focus issue after replacing convergence IC's
pull the fron grill off the set then remove the cardboard covering the hole that is in the front of the set you will find a square box that has 6 controls on it adjust the focus for the red, blue and green crts, do not adjust the three marked screen control.
they are both five amp pico fuses.
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