Replacing Three Bulged Caps Saved An LG Monitor
Hi, my comrades! I am resuming my articles after a long gap due to hectic domestic activities! Keeping healthy and kicking around as usual! This LG Monitor belongs to the Hospital, where I work and it was brought to me in a dead condition. As I forgot to click it when it was not working, I have just put a picture of it taken immediately after it started working!
As usual, I opened the Monitor at the hospital and the IT-Administrator helped me in cleaning the inside thoroughly. I dismantled the set completely and carried only the boards with the panel to my home for troubleshooting.
On verification, I found that three of the electrolytic capacitors were bulged. After replacing these, looked for any other defective components and could not find any. Did a thorough retouch of the entire power supply board. Applied power and found that the outputs voltages were correct as marked on the board.
So reconnected the board and applied power and found a satisfying display.
Carried the display back to hospital and fit it in its cabinet, connected it to a computer and allowed it to run for hours. As it was working very well, concluded the mission was accomplished successfully!
Well, I never forgot to allow the satisfaction get added to its reopened bag! (LOL).
This article was prepared for you by Parasuraman Subramanian from India. He is 72 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.
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You may check on his previous article on Cracked Fuse, Capacitor, Shorted STR & Diodes Found In ONIDA Ultra Slim CRT TV
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18 Comments
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Yogesh Panchal
January 21, 2022 at 10:29 pm
Good Fix!Sir
Parasuraman S
January 23, 2022 at 12:53 pm
Many thanks, dear!
Albert van Bemmelen
January 21, 2022 at 10:53 pm
Nice that this time they took the cleaning part out of your hands, and that just replacing those 3 bulged e-caps was all it took to fix this LG monitor.
Parasuraman S
January 22, 2022 at 9:48 am
Many thanks for your comments, dear!
Anwar Y Shiekh
January 21, 2022 at 11:02 pm
It is great to use top grade low ESR capacitors and then know the unit may live longer than it did from new.
Parasuraman S
January 22, 2022 at 9:49 am
Yes. Such high quality capacitors are not easily available in retail stores. Many thanks for your comments!
Mathew Charles Karonga
January 21, 2022 at 11:31 pm
Experience is the best weapon and appear as if everythig is simple when the repair is carried out by the wise gurus.
Parasuraman S
January 23, 2022 at 12:54 pm
Many thanks for your encouraging comments!
Tayo
January 22, 2022 at 10:48 am
Only a brave, crazy or extremely competent repairman would only take the boards without the display.
I hope to, one day, be as braze, crazy and or knowledgeable as you Sir. Well done.
Edit to add:
The hospital where you work seems to have a lot of TVs which need your attention. Are they constantly on displaying information?
Parasuraman S
January 23, 2022 at 12:58 pm
(1) As I mostly use a two wheeler for my trip, I prefer to make my cargo as simple to carry as possible. Moreover, I carried the display and boards together. But mentioned panel, which you might have thought as the control panel strip. What I meant was the display panel. (2) Not TVs, dear! These are monitors.
Many thanks for your comments!
Waleed Rishmawi
January 22, 2022 at 1:56 pm
mission accomplished indeed...LOL thanks for sharing and have a blessed day
Parasuraman S
January 23, 2022 at 12:59 pm
Many thanks for your comments, dear!
Imoudu Onwumah
January 22, 2022 at 3:47 pm
You are welcome back my friend and thanks for sharing this repair articles,I guess no caps changing this time around.Infact I noticed you have not being sending in article for some pass few wks and I was asking myself "has Mr Parasuraman.S retire from electronics repairs?" Well thank God you are back and in good health.I missed u.
Parasuraman S
January 23, 2022 at 1:04 pm
This concern of all my techie-friends across the globe, is what drives me further and farther! The problem that I find is finding time for writing an article! Though I have completed around 2000 sets, only around 300 cases have been selected for writing articles. Around 30-40 sets are pending to be repaired, and many completed awaiting article writing! That's the situation with me! Many, many thanks, dear for your comments and encouragement!
Anil Kumar V K
January 24, 2022 at 2:19 pm
Great work sir,
Anil kumar from Mumbai
Parasuraman S
January 25, 2022 at 9:31 am
Many thanks for your comments, dear Anil Bai! Have a great year ahead!
Lynn Blakely
January 25, 2022 at 7:26 am
Parasuraman A fine repair, and always enjoy reading your repair articles. Glad you are well. A wise man said an idle mind is the devils workshop,so it is good you have lots of opportunity to keep your fine mind active.
Parasuraman S
January 25, 2022 at 9:33 am
That is a wonderful encouragement! In fact, Jestine Yong and this blog is one of the serve as fuel for my persistent sustenance! Many thanks dear, have a great year ahead!