Intermittent In Two LG LCD Monitors Repaired
These two monitors were brought to me from a faraway distance, by one of my close friends with the complaint that the monitors are intermittent and in one, the colour changed from red, blue to green intermittently.
After doing a general clean up, I checked the Adapter first.
I opened the Adapter and found a lot of dry solder on the board. Hence did a thorough dry solder patch up and also replaced the electrolytic capacitors in it. Then when I powered it up, it was steady and showing output voltage perfectly.
After having got the desired result, I connected the adapter to the monitor, which is reported to be showing RGB intermittently. Observed the case. Then disconnected and opened the monitor. Saw a few dry solders, which I patched up. Also replaced the electrolytic capacitors in it. Then when I switched it on and left it for a few hours, it was steady.
Even the other monitor was working perfectly and perhaps the problem was only in the adapter, which I have now solved.
The picture of the defective components is also added below:
The net result of this repair work was also very satisfactory and I allowed it to jump into the collection bag unhesitatingly.
This article was prepared for you by Parasuraman Subramanian from India. He is 69 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.
Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.
P.S-If you enjoyed reading this, click here to subscribe to my blog (free subscription). That way, you’ll never miss a post. You can also forward this website link to your friends and colleagues-thanks!
You may check on his previous repair article below: https://jestineyong.com/bad-high-voltage-capacitor-in-microwave-oven/