After putting a dh220 on the shelf forthe last 8 years (time flies!), I finally have it on the bench.
I went through and compared each cap to what is om the components list and all but one are as specified on terms on capacitance. Some are a higher voltage than specified.
Some of the caps are branded (Nichon, IC, Evox), but most of the film caps aren't.
I've read that film caps don't generally degrade, but gicen they aren't branded, I question the quality of them and am on the fence as to whether ot not I should replace them.
Also, I am going throigh and testing the volatges at each transistor per the manual, and they seem a bit off. I need to make a table of all the values and will post them when I'm done. I wasn't able to find voltages for the test points
on the board. Some are the same potential as the transitor leads, but at least one isn't. If anyone knows what voltage those points should be, I'd appreciate that info.
Thanks
James
I went through and compared each cap to what is om the components list and all but one are as specified on terms on capacitance. Some are a higher voltage than specified.
Some of the caps are branded (Nichon, IC, Evox), but most of the film caps aren't.
I've read that film caps don't generally degrade, but gicen they aren't branded, I question the quality of them and am on the fence as to whether ot not I should replace them.
Also, I am going throigh and testing the volatges at each transistor per the manual, and they seem a bit off. I need to make a table of all the values and will post them when I'm done. I wasn't able to find voltages for the test points
on the board. Some are the same potential as the transitor leads, but at least one isn't. If anyone knows what voltage those points should be, I'd appreciate that info.
Thanks
James