Voltage Stabilizer Repair | Electronics Repair And Technology News

Malfunction Of LM324 SMD IC Caused No Output In V-GUARD Voltage Stabilizer Model VG50

Jestine Yong — Sat, 04 Oct 2025 02:13:04 +0000

This voltage stabilizer was brought to me by my neighbor saying that it was getting on but no output came even after the three minutes’ delay. I opened the unit and found the inside very clean and neat. It consisted of a control board with LM324 SMD IC, two relays, two […]

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5 KW Domestic Stabiliser Repair

Jestine Yong — Sat, 15 Mar 2025 08:32:38 +0000

This domestic stabiliser was brought to me with complaints of shutting down once its connected to load after few minutes. The customer said he uses it to power his water purifier machine, he produces sachet drinking water for sales. So I connected it to a/c wall socket and plug in 100 […]

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Malfunction Of Both Relays Solved In V-GUARD Voltage Stabilizer V-G5

Jestine Yong — Sat, 08 Jun 2024 11:53:06 +0000

This Voltage Stabilizer was brought to me by an Electrician customer, with the complaint that relay was chattering. The female plug (output) was broken and just hanging on one screw. The plastic shield for the PCB, which would have been an insert between the PCB and core of the […]

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Lightning Blowing Relay Contact Was Found In V-Guard Voltage Stabilizer

Jestine Yong — Sat, 11 May 2024 03:17:13 +0000

This Voltage Stabilizer, which was set right by me in April, 2023, revisited me in December, 2023 stating that the output was missing, after a lightning attack in their area. I opened the unit and did a cleaning and checked up. When I applied the power, the input was […]

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V-Guard Electronic Voltage Stabilizer Restored

Jestine Yong — Fri, 18 Aug 2023 23:28:34 +0000

This voltage stabilizer used by a family friend widow for her fridge was brought to me with the complaint that there was no output indication and the Fridge did not get on. As per my usual practice, I opened the device and subjected it to a thorough cleaning. Following is […]

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Domestic Voltage Stabilizer’s Transformer Humming Normalised

Jestine Yong — Sat, 12 Feb 2022 13:07:59 +0000

This D V S was on my bench work with complaint of loud humming and output voltage showing letter H. I opened the case and did visual checking. I did observe a bulged e cap, which I did change. When I on the stabilizer, problem same. For your […]

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Silenced A Chattering Voltage Stabilizer

Jestine Yong — Fri, 28 Jan 2022 12:46:31 +0000

When the inter-district movements were eased after a very long control due to pandemic situation, we visited our relative staying around 250Kms away. Whenever I visited my relatives, I never missed a chance to take up something for repair. Though my relative had a few items, she only wanted […]

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Dry Solder And Bad Capacitors Caused Refrigerator Stabilizer To Go Dead

Jestine Yong — Sat, 07 Nov 2020 04:28:58 +0000

This voltage Stabilizer belonged to a family friend and was brought to me stating that it did not work. When I checked it up, the complaint was correct as no output was coming. There is a voltage meter which can be connected to input or output through a selector […]

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Transistor Failed In V-Guard Stabilizer

Jestine Yong — Thu, 21 May 2020 13:43:14 +0000

Device: V-Guard Stabilizer used for Refrigerators Complaint reported: Dead Observation: Complaint was due to some component failure. Trouble shooting and rectification done: Cleaned the inside thoroughly. Checked the transistors one by one using Analogue Multimeter. Found one transistor shorted. Replaced it. Looked for any other failure of components. […]

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Shorted Zener Diode Found In Voltage Stabilizer

Jestine Yong — Wed, 05 Dec 2018 13:49:19 +0000

This is a voltage stabilizer that is in use for my Fridge. It had failed a couple of years back and that time, it was due to dry solder and I solved it and also replaced the electrolytic capacitors, since the ESRs were in the brim. […]

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