400B/C laser repairs –
I have been looking at the 'disk read error' consoles on eBay and obviously the most likely cause is a defective laser, which is expensive to replace.
Does anybody know the most likely 'failure mode' of the lasers because I notice there are also auctions for 'laser lens loops' which are much cheaper than a complete replacement laser.
I've seen a website with details of how to test the laser lens coils and from what I've read there seems to be a problem with them burning out on some models.
What about the laser diode itself though - does this die eventually as well or is it the more reliable part of the assembly?
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