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Post by bzhbass1 on Mar 13, 2023 18:15:20 GMT -5
Hi Ken , really interesting indeed ! I will look if it's possible to test that component with only a multimeter I see on the schematic that the sensivity pots are effectively 220k log , all those in my unit are 200k... Could you PM'd it the full pages ? Thanks for your help and insight ;-) Cheers Stef
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Post by bzhbass1 on Mar 13, 2023 19:34:12 GMT -5
Good find! I once owned a dd4 with one of the pots swapped out for a trimpot. I remember searching for the correct part. I believe they are ALPS, but I didn't find any replacement. Hope you find a suitable replacement! Hi Krillo , ALPS seems to build that pots type too but only on special order (if I understand well ;-) ! ) Cheers Stef
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Post by kenjwright on Mar 13, 2023 20:59:12 GMT -5
really interesting indeed ! I will look if it's possible to test that component with only a multimeter Seems I am learning more about electronic components than I thought I would ever need This is an OpAmp/Buffer so I guess that makes perfect sense that in a failing state the output (if any) signal would be weak. www.digikey.com/en/products/base-product/texas-instruments/296/LF353/339Cheers! Ken
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Post by bzhbass1 on Mar 14, 2023 9:09:04 GMT -5
I was thinking the same last night ;-) I had a look too about this component , and try to understand it's function in it ! Anyway , it seems not easy to find one with the same reference ( 21AF LF353M) on the web actually ... Cheers Stef
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