V-Guard Fridge Stabilizer Deluxe 50 - Dead - No Input & output LED lights up. No output voltage.
Condition: Dead. No input or output LED light up.
Used a pre-programmed IC CTM1273 to control the circuit board PWB.
On checking, the thermal fuse found damaged.
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Replaced the thermal fuse (inserted inside the primary side of the transformer). Power light came alive, but there was no output LED light up; or any output voltage; even after 5 minute duration.
Checked the components on circuit board. The relay used (on board) HJR-3FF-S-2 was found non operative. Its winding was open. Replaced the same; and checked OK.
When checking this stabilizer, check the AC fuse [the thermal fuse in the transformer] first. This fuse can be replaced. Pull that fuse out (after de-solder its two connections). Insert a new one in place and solder the terminals as it was. I’ve marked both the damaged component that I’ve replaced. Note the photographs attached.
If the pre-programmed IC said above is found damaged, contact the authorized service center for V-Guard. There is no way to get it from open electronic spare part market.