Red Sea ReefLED 90 Electronic Board Bottom
Fits
ReefLED 90
Part no.
R35173
Red Sea ReefLED 90 Electronic Board Bottom
Fix a ReefLED 90 that's lost driver or dimming control. This is Red Sea's genuine bottom electronic board — the lower PCB — for the ReefLED 90, restoring LED driving and control functions when the board itself has failed. It's a board-level repair, and a materially cheaper one than replacing the whole light fixture.
Key features
- Genuine Red Sea part — factory board, direct-fit replacement.
- Board-level repair — fixes driver and control faults without replacing the whole fixture.
- Restores LED driving — corrects channels that won't dim, won't respond to the app, or have stopped driving the LEDs altogether.
Specifications
| Manufacturer part number | R35173 |
|---|---|
| Also known as | ReefLED 90 Low PCB, Electronic Board Bottom |
| Fits | ReefLED 90 only |
| Function | Lower driver/control board for the LED array |
| Fitting | Internal component — requires opening the fixture housing |
| Sold as | Single board |
Will it fit my light?
This board is specific to the original ReefLED 90. It is not the part for the second-generation G2 115, which uses a different board revision, and it is not the top board — Red Sea sells the ReefLED 90 Electronic Board Top separately for faults on the upper PCB. Check which board has actually failed before ordering; our team can help narrow it down from the symptoms.
Suitable for, and not suitable for
Suitable for a ReefLED 90 with driver or dimming-control faults once the power supply and fan have been ruled out. Not suitable for the G2 115 or any other ReefLED model, and not the right part for a cooling or power-supply fault — check those first, as they fail more often and cost less to replace.
Fitting
Internal component — fitting means opening the fixture housing and reconnecting the driver wiring correctly. If you're not confident doing this yourself, we can fit it for you; ask in-store or by phone before you start.
Warranty and delivery
Covered by Red Sea's manufacturer warranty on spare parts, in addition to your consumer guarantee rights under Australian Consumer Law. Ships as a small parcel, standard delivery.
Common questions
How do I know if it's the bottom board and not the top board or power supply?
Rule out the power supply and fan first — they fail more often and are cheaper to replace. If the light powers on but specific channels won't dim or respond to the app, the fault is more likely a driver board; ask us to help confirm which one before ordering.
Does this fit the G2 115?
No — the G2 115 uses a different board. This part is for the original ReefLED 90 only.
Is this a genuine Red Sea part?
Yes — R35173 is Red Sea's own factory board for the ReefLED 90.
