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Small green circuit board with electronic components for HP T790 printhead

YINGHUA

YINGHUA sensor PC board Fits Forhp- T790 printhead

SKU CH-38NM-QDN4W

Replacement sensor PC board restores printhead function for HP T790 printers

  • Product categoryPrinthead
  • Compatible with HP T790 printheads for correct fit
  • New sensor PC board restores reliable printhead detection
  • Genuine replacement part maintains original printer performance
  • Printhead-type component ensures proper electrical interface
  • Listed by manufacturer in April 2026 for current availability

Printhead Sensor Board for HP T790

This sensor PC board is designed as a direct replacement component for the HP T790 printhead assembly. It serves repair technicians and print-shop operators who need to restore printhead functionality without replacing the entire unit. The part addresses sensor-related failures that halt production on compatible large-format printers.

Component-Level Repair for Printhead Errors

The board targets the specific sensor circuitry inside the T790 printhead, resolving detection or alignment faults that stop printing. It provides a cost-effective fix when diagnostics point to the sensor board rather than the nozzles or fluidics. The repair scope ends at this board; it does not address mechanical wear or ink-delivery issues elsewhere in the printhead.

New OEM-Style Part for Direct Installation

Supplied in new condition, the board matches the original form factor for the T790 printhead. Its connector layout and mounting points align with the factory assembly, allowing technicians to swap the board during scheduled maintenance or emergency downtime. No additional calibration hardware is included, so the printer’s own service routines must complete the alignment.

How it compares

Measured against everything we stock in Print & Scan Accessories, at today’s prices. Recalculated every night.

Price $111.99
Pricier than about 56% of the 5,855 comparable items (median $91.99).

Specifications

Product
Product categoryPrinthead

Questions about this item

Will this sensor PC board work with my existing HP T790 printhead assembly?

The board is made to fit the HP T790 printhead, so it aligns with the original mounting points and connector layout on that unit.

How can I confirm the sensor board is functioning after I install it?

After fitting the board, run a printhead calibration or nozzle check from the printer menu; a successful test shows the sensor is communicating correctly.

Does the package include any cables or mounting hardware, or must I buy them separately?

The listing only describes the sensor PC board itself; any ribbon cables, screws or brackets needed for installation are not included.

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