corrosion on ecg connector

There is an old Philips service bulletin on this issue (SB86202821A).  Philips blames the issue on the cleaning process:

• Application of disinfecting products other than Isopropyl Alcohol inside the connector on the patient cable can result in corrosion and/or chemical residue build-up
• Application of product other than Isopropyl Alcohol inside the connector on the patient cable, followed by connection to the MX40/MX4J PWM while there is still fluid inside the patient cable connector, and then insertion of batteries into the device, will cause a reaction between the base metals of the contacts. This then results in corrosion to both the MX40/MX4J connector pins and patient cable connector contacts
• Application of bleach inside the connector on the patient cable results in corrosion and residue build-up on the contacts.

Philips has recently redisigned the leadset cables to due to a faulty gasket design. Any new trunk cable orders should come with the new design.

As far as a fix, there are not a lot of options.  Attempting to scrape off the corrosion will remove the anti-corrosion coating and will quickly return.  The pack will probably need to be returned to Philips, or a third party for repair.

We will also be happy to answer any  questions you may have regarding the MX40 service and operator manuals at anytime.

Philips has received reports of corrosion of the patient cable connector pins on the MX40/MX4J Patient.