horizontal lines on laserjet m402dw

[adacom]

M402dw laser printer - about 6 or 7 years old - little used - has started to show horizontal lines on the right side of the printout - starts about at the centre of the page and runs to the right edge - quite feint on print with little content but heavier when a full background

original toner cartridge with about 50% capacity left - actual print count about 1800

spacing on lines 28mm approx - if its coming from a roller that suggests roller is 9mm dia 

have searched for info and suggestions are toner cartridge or fuser - looking at photos and images - rollers in fuser seem larger than 9mm and there is a post on here suggesting spacing would be over 55mm if it was the fuser 

i have found some info that refers to a pcr roller in the toner cartridge and looking at photos that looks to be about 9 or 10mm dia

not happy that i have nearly 50% toner left if i have to scrap the cartridge but if that cures the problem then so be it - if its the fuser is as cheap to buy a 4002dw 

any thoughts or insight appreciated 

thanks

[Valsimot]

28mm that is a roller inside the toner. Replace the toner cartridge. 

[adacom]

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@Valsimot wrote:

28mm that is a roller inside the toner. Replace the toner cartridge. 

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thanks - so the pcr roller then? - i can see how this can be replaced fairly easily but are they available at a reasonable cost in the UK

loathed to use a 3rd party toner cartridge but at the cost and the fact a genuine one has failed with 50% of its toner not used does not speak well of the HP one

[adacom]

adding to my info above - i have looked at the pcr [roller] - it is in fact faulty - there is a bubble on it - easy to get to and change - are these available as a spare in the UK - seen them in India and the likes but cannot find one here

as an idea so as not to use non genuine toner/cartridge - would a roller from a cheap non oem cartridge work - full [rubbish] cartridges are available for a few pounds here