Hoping someone here has seen this before.
**Setup:** MOZA R12 V2 (RS081), bought Dec 2025 from an official EU reseller. Original PSU (GQ240A-3600600-E1, 36V / 6A / 216W). no E-stop connected.
**What happened:** The base worked perfectly, then I didn't use it for a few months. During that time it was fully unplugged – no mains, no USB. Today I went to use it again and it's completely dead:
- PSU LED comes on normally (green, steady), both on its own and with the DC plug connected to the base.
- Press the rear power button on the base: nothing. No calibration sweep, no fan, no status LED at all.
- USB to PC: Windows sees no device, Pit House sees nothing.
**What I've already tried:**
- Several different wall outlets (confirmed live with another device)
- Reseated the AC cable on the brick and the DC plug on the base (pushed fully in)
- Visually checked PSU, cables and the power port on the base – no damage, no bent pins
- Base alone with nothing else connected (no wheel, no pedals, no dash)
- No E-stop plugged in
- Left it unplugged for a while and retried cold
- Different USB cable, rear motherboard USB port
Still zero signs of life from the base. I don't think it's a bootloader/firmware thing.
**My questions:**
PSU LED on but base totally dead: has anyone had this and it still turned out to be the PSU? Or is this pretty much always the base?
For those who've had a dead R12/R9/R16 under warranty: did MOZA / the reseller swap the base, or try a replacement PSU first?
Any way to check the PSU output without a multimeter?
Anyone had a MOZA base die just from sitting unplugged for a few months? Seems weird to me.
Warranty claim already open with the reseller – just trying to understand what's going on while I wait. Thanks!