Thursday, 4 August 2022
Modif IC Goldstar GS8334-09B To GS8334-02B
Your Goldstar Soundmax has been damaged by lightning! When I plug it in, the backup LED is dim, and when I turn it on with the channel switch, it doesn't work!!!
Defective spare parts found: IC reset software pin short circuit, Eprom 24C02, Q06 C3198!!!
The readings on all VCCs are normal except for the drop from 5V to 3.6V due to the previous short sections.
Since this TV is an old product, it's really difficult to find the software type IC GS8334-09B . I finally tried to mod with another type, I have an earlier GS8334-02B type.
Well, if you are facing the same thing, click on the image above to enlarge it!
When I installed the GS8334-02B chip, the TV could live normally, the OSD was on, but the matrix / color was mixed, like they were blocked in NTSC! Finally I tried disabling the 41 Pin Tint B/W and the image color was back to normal!
Then I try to open the picture menu, the brightness and color contrast settings are disabled.
An hour has passed to check this line ... and the image adjustment works fine !!!
Pay attention to the screws on the GS8334-02B chip:
four = brightness
5 = color
6 = contradiction
You can determine the R value of the image, the intensity of darkness and light, and the color of the image yourself!
Well, my friend, everything works ...
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