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PCB Circuit Board 33-59375-K - Bubbles Supply

PCB Circuit Board 33-59375-K

Part #: 33-59375-K

$261.68
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this circuit board

The Balboa PCB Circuit Board 33-59375-K is a universal BP501 control board designed for Balboa spa control systems. This OEM replacement circuit board serves as the central processing unit for your spa's electronic functions, managing everything from pump operation to temperature control and safety systems.

Built to Balboa's exact specifications, this genuine replacement board ensures reliable performance and seamless integration with your existing control pack. At Bubbles Supply, we guarantee an exact fit for your spa system and offer same-day shipping to get your spa running quickly. Every circuit board comes with our comprehensive 1-year warranty for complete peace of mind. Before installation, ensure your spa is completely powered down and consider having a qualified technician handle the replacement to avoid damage to sensitive electronic components.

Exact part number

33-59375-K

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 33-59375-K circuit board
  • Balboa BP501 PCB
  • BP501 control board

Looking for an older part number? Check our supersession lookup tool

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Spa displays error codes and won't respond to controls
  • No display or blank topside panel
  • Pumps, jets, or blower not responding to commands
  • Heater not activating or spa stuck in heating loop
  • Spa behaves erratically — incorrect temperature readings, random cycling
  • Control pack powers on but spa functions are unresponsive

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your control pack is a Balboa BP501 system — check the label on the existing board or control pack housing
  • Verify the full part number on your current board matches 33-59375-K exactly before ordering
  • Diagnose whether the board itself is faulty — check for burnt traces, blown components, or water damage before replacing
  • Confirm your topside panel and sensors are compatible with the BP501 board revision
  • Note all wiring connector positions and photograph your existing board before disconnecting anything
  • Have a licensed electrician or qualified spa technician perform the swap — working inside a control pack involves live 240V wiring

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Hard — Technician recommendedTypically 60-120 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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