Board-Level HDMI Diagnostic Tool

Find the HDMI fault in seconds.

A custom-built tester and desktop app that reads all 19 pins of an HDMI port, pinpoints shorts, opens and bridged data pairs, and tells you whether the console's HDMI is really the problem — before you touch the soldering iron.

19pins read & mapped
2test modes
Windowsdesktop app
Bluetoothready
HDMI Diagnostic PRO
HDMI Diagnostic PRO diode-mode scan showing all clear and 18 of 18 measured pins OK
Why repair techs use it

Stop guessing. Know the port is the problem.

Probing 19 HDMI pins by hand with a multimeter is slow and easy to get wrong. This kit reads every pin for you, flags the exact faults, and shows the customer real proof — so you quote with confidence and only reflow when it's actually needed.

Diagnose in seconds

A full 19-pin scan runs automatically and updates live — no more probing one pin at a time and losing your place.

Pinpoint the real fault

Instantly flags shorts to ground, open/broken pins and bridged data pairs — the failures that actually kill an HDMI port.

Quote with proof

Export a clean CSV report and show the customer the evidence. Fewer "do I really need this?" conversations.

The Software

A diagnostic dashboard, not a wall of numbers.

The included Windows desktop app turns raw pin voltages into a clear verdict: a live connector map, per-pin readings, and a plain-English fault analysis.

HDMI diode-mode scan with all measured pins nominal and an 18 of 18 OK result
All clear

Diode-mode scan showing all measured pins nominal, with an 18 / 18 OK result.

HDMI Diagnostic PRO flags pin 1 in red as SHORT with 17 of 18 pins OK
Single short detected

Pin 1 is flagged in red as SHORT, with a fault explanation and a 17 / 18 OK result.

HDMI Diagnostic PRO diode-mode scan flags multiple pins as OPEN with 9 of 18 pins OK
Open connections detected

Multiple pins are flagged in orange as OPEN, with a 9 / 18 OK result and connection details.

Everything it does

Built for console & board-level repair.

One tool for the HDMI faults you actually see on the bench — from PS5 and Xbox to laptops, monitors and TVs.

  • All 19 HDMI Type-A pins read and mapped on a visual connector.
  • Two test modes — diode mode (console off) and live voltage mode (console on).
  • Automatic fault analysis — shorts, opens, bridged pairs, missing +5V / HPD.
  • Console power detection — tells you if the port is live before you probe.
  • CSV export for records, quotes and customer proof.
  • Demo mode to learn the workflow with no board connected.
  • Windows 10/11 (64-bit) app — extract the full ZIP and launch HDMI Diagnostic PRO.vbs. The runtime is included.
HDMI Diagnostic PRO detects shorts on pins 3 and 4, showing 16 of 18 pins OK
HDMI tester in its assembled white protective housing with four corner screws and indicator openings
Wireless-ready

Bluetooth built in. Mobile app on the way.

Every board ships Bluetooth LE enabled from day one. Today you run it over USB with the desktop app — and the moment the companion mobile app launches, you just install it and connect. No new hardware, no re-flashing.

Go fully cordless on the bench by powering the board from any USB power bank while it streams readings to your phone.

Bluetooth LE on every boardMobile app — coming soonNo re-flash for existing owners
The Hardware

A real custom board — not a breakout hack.

Purpose-designed around an ESP32-S3 with dual 16-channel analog multiplexers, so all 19 pins are sampled cleanly through one HDMI connector and read over USB-C.

ProcessorESP32-S3
ChannelsDual CD74HC4067
InputHDMI Type-A
Power / dataUSB-C (5V)
WirelessBluetooth LE
Board size55 × 38 mm

Powered over USB-C — use a PC, a 5V wall charger, or a USB power bank for wireless use. No battery required.

In the box

Everything you need to start diagnosing.

The tester board

Assembled ESP32-S3 HDMI diagnostic board in a protective housing.

Desktop software

Windows 10/11 (64-bit) app — extract the ZIP and launch. Runtime included.

Bluetooth-ready

Wireless built in now; add the mobile app free when it launches.

Quick-start guide

Flashing, connecting and reading your first port, step by step.

Complete kit
$100one-time
+ flat-rate shipping: $9.99 US / $19.99 UK (USD)
The board, the software, and every future firmware the hardware supports.
  • Assembled HDMI diagnostic board in a housing
  • Windows desktop software (self-contained ZIP)
  • Reads & maps all 19 pins with automatic fault analysis
  • Bluetooth-ready — free mobile app when it launches
  • Quick-start guide & support from JWS Electronics Repair
In stock — 5 testers available

Stock is allocated after payment is confirmed. If the remaining units sell before your payment is confirmed, your order will be a backorder with estimated delivery in 2–3 weeks.

Contact & shipping details

The hardware ships to this address. Your software download link goes to the email entered here after verified payment.

HDMI Diagnostic PRO kit$100.00

Flat-rate shipping (US)$9.99

Total (USD)$109.99

Payment is completed securely on Square. No card information is stored on this website.

Secure checkout with Square
Questions

Good to know before you buy.

Does it need a battery?+
No. The board is powered over its USB-C port. Plug it into your PC, a 5V wall charger, or a USB power bank. For wireless use, a small power bank keeps it running while it streams over Bluetooth to your phone.
What can it test?+
Any HDMI Type-A port — PS5, PS4, Xbox Series / One, laptops, monitors and TVs. It reads all 19 pins, so it works anywhere a standard HDMI port is used.
When is the mobile app available?+
It's in development. Every board shipped today is already Bluetooth-ready, so when the app launches you simply install it and connect — no new hardware and no re-flashing required.
Which operating systems does the software run on?+
Windows 10 or 11 (64-bit). Download and extract the complete ZIP, then open HDMI Diagnostic PRO.vbs. Keep the runtime folder alongside the launcher. A macOS build is not available.
Do I need soldering skills to use it?+
No. You connect the board to the HDMI port you're testing and read the results on screen. It's designed to tell you whether a port is faulty and which pins — so you know before any soldering begins.
How do I pay, and what does shipping cost?+
Checkout is handled securely through Square. The kit is $100 plus flat-rate shipping: $9.99 to the US or $19.99 to the UK. All prices are in USD, and shipping is calculated from the country selected at checkout. Enter your contact and shipping details, then complete payment with Square. Once payment is verified, your Windows software download link is emailed to you. Hardware shipping is handled separately; the software email is not a shipment confirmation.