# Can the Non-replaceable Fuse in the 100/30 MPPT controller Be Repaired? **URL:** \ **Category:** Q&A and troubleshooting\ **Tags:** fuses, diy, offgrid\ **Created:** [5 January 2025 13:22 UTC](https://community.victronenergy.com/t/can-the-non-replaceable-fuse-in-the-100-30-mppt-controller-be-repaired/17584 "2025-01-05T13:22:32Z")\ **Posts on this page:** 1\ **Showing post:** 7
**Author:** ![Asinn](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/asinn/32/12787_2.png) [@Asinn](https://community.victronenergy.com/u/Asinn)\ **Post date:** [5 January 2025 18:17 UTC](https://community.victronenergy.com/t/can-the-non-replaceable-fuse-in-the-100-30-mppt-controller-be-repaired/17584/7 "2025-01-05T18:17:21Z")
After some armchair research I decided to go for it. 1. Removed the screws and gently pried the casing to break the seal. 2. Placed the unit in a convection and heated it to 104C/220F for half an hour 3. Secured the unit in a vice and gently pried the casing away. Using gloves and a flat screw driver. The choke was adhered to the upper casing and the potting compound broke away and the choke remained intact on the PCB. 4. I looked at the fuse and took snapshots. No burn marks or any anomalies observed inside. 5. Soldered a 2cm piece of wire over the fuse. I know this is highly NOT recommended. I’m using low voltages. 6. Repeated step 4 A FET check outlined above. [6. Pre-RMA test form - MPPT solar charger](https://www.victronenergy.com/media/pg/Pre-RMA_Bench_Test_Instructions/en/pre-rma-test-form---mppt-solar-charger.html#UUID-a02c41de-0c89-5d84-c701-4f28b6ae665b_bridgehead-idm133307965784142) The three lights flashed repeatedly and stopped and the blue light remained blinking @5 seconds. ![Fuse 1](https://europe1.discourse-cdn.com/victron/original/2X/2/2608296c8cdc69c8643d4da61320a8497197dc97.jpeg) ![Fuse 2](https://europe1.discourse-cdn.com/victron/original/2X/2/27a3ff7dd70217de2644e566d6e7cf320079607e.jpeg) ![P1060393](https://europe1.discourse-cdn.com/victron/original/2X/f/f6fd13043d8d15fa19367ad941ab6af44ccb4dcf.jpeg) ![P1060399](https://europe1.discourse-cdn.com/victron/original/2X/0/0184ac5286e28d0aa1c9f8d63d8999d05eea0b0a.jpeg) ![Screenshot_20250105-130853](https://europe1.discourse-cdn.com/victron/original/2X/c/cd56c3a8bf7eb7505d45510c0f031294875eb6e4.jpeg) --- _[View the full topic](https://community.victronenergy.com/t/can-the-non-replaceable-fuse-in-the-100-30-mppt-controller-be-repaired/17584)._