Hi All,
I have been trying to replace a KSS-240a unit. I have ordered two KSS-240a units from amazon both are not working. This very well could be because they are probably cheap knockoffs.
I was wondering if there is a static blob or protection method on these units because they both measure shorted (0.2ohm) on the power pot.
On one of the units I have tried adjusting the pot to see if it changes, but it didn't. I am aware that you should not adjust these pots, that's why I just tested this on one unit, so I have one unchanged unit left...
I have been trying to replace a KSS-240a unit. I have ordered two KSS-240a units from amazon both are not working. This very well could be because they are probably cheap knockoffs.
I was wondering if there is a static blob or protection method on these units because they both measure shorted (0.2ohm) on the power pot.
On one of the units I have tried adjusting the pot to see if it changes, but it didn't. I am aware that you should not adjust these pots, that's why I just tested this on one unit, so I have one unchanged unit left...
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It seems you are correct! 🙂 I went to the thrift shop and bought another Sony CD-player. I used the new laser and it works. To bad it uses a different mechanism...
So for future reference and a note to self; the KSS-240a doesn't seem to have a static solder blob...
So for future reference and a note to self; the KSS-240a doesn't seem to have a static solder blob...
I’ve recently purchased and installed several modern generic KSS-240A optical pickups. None of them came with a “shorting blob” of solder. I think it isn’t needed because the entire APC control circuit is part of the KSS-240A itself.
Other currently available replacement optical pickups such as KSS-210A do come with the shorting solder blob which must be removed before use. But not the KSS-240A.
-EB
Other currently available replacement optical pickups such as KSS-210A do come with the shorting solder blob which must be removed before use. But not the KSS-240A.
-EB
Thanks, that's good to know. Still I'm wondering why the power pot measures like it is shorted. On the other (old) kss-240's I got readings varying from 800-1300 Ohms.
The 3 trimpots are arranged differently in original Sony-made KSS-240A vs. the modern generic units. I’m working on a post comparing them to each other. It will have photos and highlighted details.
-EB
-EB