How to activate your warranty

There is no need to pre-register your warranty with iiyama, just follow the six simple steps below to activate your warranty should the need arise. iiyama provide a first class service from experienced engineers and their customer service helpdesk.

Step one - Check that all connections have been properly made.

Step two - Check set up in user manual. Wherever possible, please try to check your iiyama product with alternate equipment before contacting the iiyama customer service help desk.

Step three - If the fault cannot be cured by the above means, call the iiyama customer service helpdesk on 01926 819189. Please have ready to hand the following details: model number, serial number and date of purchase*. Alternatively you may contact the iiyama customer service helpdesk by sending your details to or fill in the Service Request Form.

Step four - Your fault will be registered and you will be issued with a returns number, which you must quote on all paperwork relating to the defective unit.

Step five - Please retain any of your leads and manuals. Replacement/returned units will not include these sundry items.

Step six - Please ensure your product is clean and presentable before packaging in original box for collection.


* Proof of purchase may be required


Warranty Cover



ProLite - 17” to 27” Desktop

3-Year on-site swap out


3-Year on-site swap out*


*Excludes models with part numbers beginning with T15, T17, T19 or ending in SR, SAW or MSC. These have a 3-Year return-to-base warranty.

Large Format Displays (LFD) – above 27”

3-Year on-site swap out


ISO-9241-307:2008 guidelines for pixel defects

LCD displays are made up of a set number of pixels and each pixel is made from 3 sub pixels; one Red, one Blue and one Green. Every sub-pixel is addressed by its own transistor and so the manufacture of a glass substrate is very complex. Due to the nature of the manufacturing process, occasional defects can occur. Pixel defects or failures cannot be fixed or repaired and can happen at any stage in the LCD’s life.

To regulate the acceptability of defects and to protect the end user, ISO have created a standard for manufacturers to follow. ISO-9241-307:2008 recommends how many defaults are acceptable in a display before it should be replaced, within the terms & conditions of warranty.

All reputable manufacturers conform to and support the ISO ISO-9241-307: 2008 standard.

Pixel defaults

The table below shows the allowable number of malfunctioning pixels that are acceptable per 1(one) million pixels in the TFT/LCD matrix.

Any or all of the following:

1(one) full bright (“stuck on white”) pixel

1 (one) full dark (“stuck off”) pixel

2 (two) single or double bright or dark sub-pixels

3 to 5 (three to five ) “stuck on” or “stuck off” sub-pixels (depending on the number of each)

The above is relevant to Class I LCD panels.

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