Comments on: 14Inch LG Television Dead Now Repaired

By: stish

stish — Sun, 29 Mar 2020 21:12:33 +0000

I realy love the you explain the trouble in electronics

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By: richard vallente

richard vallente — Mon, 05 Feb 2018 12:49:38 +0000

Thank you very much for sharing your tv problem. How did you find the lead on the harm of H.O.T. You know how good you are to find a piece that will follow the breakdown of H.O.T... More power to you Mister Humphrey.

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By: Robert Calk

Robert Calk — Thu, 15 Dec 2016 10:04:42 +0000

Nice repair and tips, Humphrey. Thanks.

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By: Humphrey Kimathi

Humphrey Kimathi — Thu, 15 Dec 2016 09:40:29 +0000

In reply to hongkongpom.

Thanks for your feedback hongkongpom, to test the HV safely in circuit(tube) you can use HV tester but if the anode cap is not installed to the tube then you can apply power briefly and see if it sparks..

Regards Humphrey

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By: Yogesh Panchal

Yogesh Panchal — Thu, 15 Dec 2016 08:28:17 +0000

For wining the game managing exact replacement of the part is also difficult for us sometime.

sir, Thanks for sharing your experience.

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By: Humphrey Kimathi

Humphrey Kimathi — Thu, 15 Dec 2016 06:22:38 +0000

In reply to Andre Gopee.

Hey Andre, Long time and glad to see you here, wishing all the best to you and your family. Shalom!
Regards Humphrey

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By: Humphrey Kimathi

Humphrey Kimathi — Thu, 15 Dec 2016 06:18:30 +0000

In reply to Henry.

Thanks for your question Henry, The capacitor C408 is used to filter the supply to the drive circuit..Actually this is the circuit which drive the HOT transistor, kindly pay attention to the word "drive", and consider a scenario i have just explained where this driver is getting not well filtered voltage to drive it means the signal which will come out of this circuit which is being feed to the base of the HOT transistor via drive tranformer will also be affected and hence the HOT will become HOT and eventually get shorted...also note that the drive transistor is labeled Q401 and the HOT transistor is labelled Q402 and this means they are related components(same with C408) and what happens to one may affect the other in terms of delivering services(working)..hope i have answered your question Henry.

Regards Humphrey

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By: Humphrey Kimathi

Humphrey Kimathi — Thu, 15 Dec 2016 06:00:04 +0000

In reply to Henry.

Thanks and welcome Humberto for your feedback.

Regards Humphrey

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By: Andre Gopee

Andre Gopee — Wed, 14 Dec 2016 15:51:59 +0000

Excellent work as usual Mr. Humphery... I really never worked on a CRT before but you have geat tips and inight. Thank you for sharing you experience. Happy Holidays to you and your family,to Mr. Jestine Yong and all the readers. Have a good one.

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By: Henry

Henry — Wed, 14 Dec 2016 00:12:50 +0000

Nicely done Humphrey. Well presented and well documented with good pictures including a section schematics. Good read too.
I would however appreciate a bit more explanation on the sentence “this capacitor [C408] can easily cause the HOT to short”. Why it that? This cap, as you have mentioned, is just a filtering component in the power supply line to the primary site of the drive transformer. The HOT is on the other, secondary site, so how is it so drastically affected by a failing filtering component.

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