Vertical trouble in Monitor AOC Model CT500n repaired
The electronic appliance that we will see on this article is an AOC Color Monitor for Personal Computer Model CT500n.
This monitor AOC was having a serious trouble with the Vertical Deflection Circuit, as shown in photos below:
As we can see, it is impossible to have a Monitor with that kind of trouble in front of us; therefore the first step was to remove the cover and look for the defect in this electronic equipment. Here some photos shown:
The main trouble was localized to IC 601 (TDA4866A) area. It is a Full Bridge Current Driven Vertical Deflection Booster IC (from PHILIPS Semiconductors). There were many cold solder joints in the vertical IC legs as seen from the below photo.
There was also dust accumulated in some areas of the PCB Board, as shown below:
You can see the top and front view of the vertical output IC in the following photos:
The cold solder joints of the Vertical Deflection IC and surrounding area were soldered. The accumulated dust on the PCB Board was cleaned with a brush. Now the monitor is working like new as seen from the below photos.
This article was prepared for you by Mr Humberto Rodriguez from Cuba. Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.
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