# 3000 NAIN — power supply diagnostics and repair HTML source: [3000 NAIN — power supply diagnostics and repair](https://lasertechservice.pl/en/case-studies/3000-nain-power-supply-repair/) Language: English Other language version: [Polski](https://lasertechservice.pl/realizacje/naprawa-3000-nain-bloku-zasilania/), [Русский](https://lasertechservice.pl/ru/realizacje/naprawa-3000-nain-bloku-zasilania/) > 3000 NAIN power supply diagnostics and repair. See dismantling, electronics work, reinstallation and start-up in photographs and videos. Author: Laser Tech Service Publication date: 2026-09-19 3000 NAIN From diagnostics and electronics repair to reinstallation and start-up. The story of one power supply unit, documented in photographs and five videos. ![A team member beside a 3000 NAIN with its side cover removed](https://lasertechservice.pl/img/realizacje/3000-nain/naprawa-3000-nain-laser-tech-service.webp) ![Front view of the 3000 NAIN with the screen switched off](https://lasertechservice.pl/img/realizacje/3000-nain/urzadzenie-3000-nain-przed-naprawa.webp) ## Where we started A 3000 NAIN arrived at Laser Tech Service. Its large white and burgundy housing immediately attracts attention, but the main service question is: what needs repairing? We began with device diagnostics. In this unit, the problem concerned the power supply. Diagnosing and repairing it became the main task. The account below follows the work from opening the housing to restarting the device. ## 3000 NAIN — device diagnostics Footage from this repair published on the Laser Tech Service channel. [Watch on YouTube](https://youtube.com/shorts/6-ACUofBwsA) ![Inside the 3000 NAIN, showing the cooling system and wiring](https://lasertechservice.pl/img/realizacje/3000-nain/wnetrze-urzadzenia-3000-nain.webp) ## Dismantling and access to the power supply After initial diagnostics, we began dismantling. Removing the covers provided access to the interior, allowing us to remove the power supply unit for further work. The photographs show that it is a separate, substantial electronic assembly. The open housing also reveals the cooling system and wiring. Their presence in the documentation does not mean they were damaged: this case concerned power supply repair. The behind-the-scenes service video supplements the dismantling photographs. ## 3000 NAIN — behind the scenes of servicing Footage from this repair published on the Laser Tech Service channel. [Watch on YouTube](https://youtube.com/shorts/RyLenhbBXGc) ![Soldering work on the power supply electronics](https://lasertechservice.pl/img/realizacje/3000-nain/naprawa-elektroniki-3000-nain.webp) ## Power supply unit repair [Laser repair](https://lasertechservice.pl/en/services/) also includes power electronics. In this case, the work concerned the device's power supply unit. We diagnosed and then repaired the removed unit. We replaced the necessary faulty components and checked the electronics. This was work within an existing assembly, not replacement of the entire device. The photograph shows soldering work on the electronics. We do not list specific replacement parts or measurement results because the case documentation does not contain that information. The confirmed scope is repair of the 3000 NAIN power supply unit. ## 3000 NAIN — electronics repair Footage from this repair published on the Laser Tech Service channel. [Watch on YouTube](https://youtube.com/shorts/AmVM_ZXMbdo) ![A technician installing the power supply in the open 3000 NAIN housing](https://lasertechservice.pl/img/realizacje/3000-nain/montaz-bloku-zasilania-3000-nain.webp) ## Reinstalling the unit and reassembling the device Once repaired, the power supply unit was returned to the housing. We reinstalled it and reassembled the device. The photograph from this stage shows the technician at the open device with the module being fitted. Bench repair is one stage; reconnecting all the device components is another. Only after reassembly could we start the complete device and check its operation. ## 3000 NAIN — reinstalling the repaired electronics Footage from this repair published on the Laser Tech Service channel. [Watch on YouTube](https://youtube.com/shorts/YU6aEnaRPmY) ![The running 3000 NAIN with its illuminated screen and optical arm](https://lasertechservice.pl/img/realizacje/3000-nain/3000-nain-po-naprawie.webp) ## Start-up and post-repair checks After reassembly, we started the 3000 NAIN and checked its operation. The final photograph shows the illuminated screen and assembled optical arm. The last video documents start-up and testing after repair. This completed the job: diagnostics, dismantling, power supply repair, electronics checks, reinstallation and operational testing. No additional faults, repairs or undocumented parameters have been added to the account. ## 3000 NAIN — start-up and testing Footage from this repair published on the Laser Tech Service channel. [Watch on YouTube](https://youtube.com/shorts/WEfLi9VhYCg) ## A closer look at the 3000 NAIN design The removed power supply and control panel supplement the work documentation. ![A technician beside the removed 3000 NAIN power supply](https://lasertechservice.pl/img/realizacje/3000-nain/blok-zasilania-3000-nain.webp) ![Control panel, 3000 NAIN marking and accessories on the housing](https://lasertechservice.pl/img/realizacje/3000-nain/panel-sterowania-3000-nain.webp) ## More about this laser Where did this design originate, and why is it still interesting? Read our [article about the 3000 NAIN — an old-school laser](https://lasertechservice.pl/en/blog/3000-nain-laser-history-design-service/). Need diagnostics for your device? Explore our [aesthetic and laser equipment servicing](https://lasertechservice.pl/en/services/). [Laser power supply and electronics repair](https://lasertechservice.pl/en/services/power-supply-electronics-repair/) — scope, cost and service request form. ## Service offerings - [Professional laser and aesthetic equipment servicing](https://lasertechservice.pl/en/services/) - [Service pricing](https://lasertechservice.pl/en/pricing/) - [Technical Service for Beauty Salon Chains and Aesthetic Clinics](https://lasertechservice.pl/en/services/service-for-salon-chains/) - [Laser power supply and electronics repair](https://lasertechservice.pl/en/services/power-supply-electronics-repair/) ## Related articles - [3000 NAIN — meet a dinosaur among lasers](https://lasertechservice.pl/en/blog/3000-nain-laser-history-design-service/) ## Video - [3000 NAIN — device diagnostics](https://www.youtube.com/embed/6-ACUofBwsA) - [3000 NAIN — behind the scenes of servicing](https://www.youtube.com/embed/RyLenhbBXGc) - [3000 NAIN — electronics repair](https://www.youtube.com/embed/AmVM_ZXMbdo) - [3000 NAIN — reinstalling the repaired electronics](https://www.youtube.com/embed/YU6aEnaRPmY) - [3000 NAIN — start-up and testing](https://www.youtube.com/embed/WEfLi9VhYCg)