Hi Mike,
It sounds to me as though the optical block is either out of alignment or
about to fail.
It might be worth using a head cleaning disc but as you have already tried
cleaning with compressed air it probably won't fix it.
I also wonder if you accidentaly put the block out of alignment with the
compressed air?
Optical blocks are very fragile and need to be precisely aligned.

There are people on this list (me included) that have had some success in
physically re-aligning or using the firmware settings to cure similar
problems, but there are just as many for whom it hasn't worked.

If it's in warranty take it in for repair.
If it's out of warranty it might be worthwhile buying the workshop manual
(or look on the MDCP) and having a go at aligning it.

If all the above fails it's worth getting a quote from Sony but block
replacements are expensive....

FWIW, my Sony MZ-R2 had very similar symptoms and was cured by changing the
focus bias settings in the eprom.
Sony wanted $550 (Aus) to repair it.

GB

>
> hi,
> i got no responses on my problem, so i thought i'd post again. here we
go:
> i have a problem with my je 510 i havent seen on the list before. when
> playing back a disc, it gives problems after around the 25  min mark. the
> playback just stops for a second, sometimes longer, then starts again .
the
> clock will just pause at say, 25:51, and a few seconds later, start again
> and show 25:52. it doesnt seem to lose any time, just pauses on and off
> randomly.

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