Calrec PQ1549 rev.4 from the Gyraf
« on: July 12, 2012, 07:02:04 AM »
Hello Guys
For some time I have a problem with the 1549 EQ.
When you start it turned out that only work Low-Mid and Hi-Mid Sections.
The high does not work ... potentiometers rotate as nothing changes.
and the lower section shall be instituted and began working as a generator.
Maybe there is a problem with feedback somewhere, but I can not find it.
for the record. I complied with all the polarities of the scheme and I measured voltages. examined several times for installation errors. IC sockets are not covered directly soldered to the board.

Sorry for Bad English...
Thank you for Help...


Re: Calrec PQ1549 rev.4 from the Gyraf
« Reply #1 on: July 12, 2012, 10:29:52 AM »
Please use the dedicated help thread - that way any solution can be re-used later by someone with related problems:

calrec PQ1549 help thread:

Similar problems has been seen before, I think - often in higher frequency bands

Jakob E.
..note to self: don't let Harman run your company..


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