To verify the electrical health of the ink cartridge, please perform the diagnostic checks below or refer to our HP printer diagnostics document: NOTE: The HP 45/78/78+ ink cartridges are extremely robust (compared to many of the newer versions found in market today) and can typically be refilled 8+ times, on average, before suffering a hard internal electronic failure. improper print quality, etc'), it sounds like your cartridge's internal micro-electronics are either clogged or have electrically failed and will need to be replaced. Regarding your recent inquiry about the HP 45/78 printer error condition (i.e.
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