Is there anything else I should look out for?
Can you also say how many mV should be set for the ML23.5?
Thanks so much!
Can you also say how many mV should be set for the ML23.5?
Thanks so much!
So finally you measured exactly as I asked you to do.
Measuring 27.5 mV means that you must have turned the pot, so everything seems 100% O.K. now. Bravo 🤗
The 23.5 has exactly the same quiescent current to answer that question.
Hans
Measuring 27.5 mV means that you must have turned the pot, so everything seems 100% O.K. now. Bravo 🤗
The 23.5 has exactly the same quiescent current to answer that question.
Hans
Do you actually have an explanation? Why do the OLD electrolytic capacitors, for example in the power amp section, sometimes have almost twice the value of what is above? For example the two 680uF 100V measured about 1200uF!
And that at 35 years OLD!
Of course I also exchanged them at the service! Back to 680uF!
What do you think?
To swap the Elko to 2200uf like those from Japan or China!
http://amp8.com/tr-amp/foreign/levinson/revi-23-5l.htm
See photo!
THANKS!!!
And that at 35 years OLD!
Of course I also exchanged them at the service! Back to 680uF!
What do you think?
To swap the Elko to 2200uf like those from Japan or China!
http://amp8.com/tr-amp/foreign/levinson/revi-23-5l.htm
See photo!
THANKS!!!
Attachments
Are these Elcos also 105C or 80C ?
You should definitely use the long life 105C version and 2200uF is o.k. but not better as 680uF.
Hans
You have to adjust Vreg+ and Vreg- with the other two trimmers.
The absolute voltage is not that critical, but they should be with opposite polarity equal to within 50mV.
Why is that, because the soft start circuit that keeps the output a few seconds at zero volt, doesn’t (fully) switch off when they are not equal.
Hans
