Thanks for the update. Glad it's sorted.
The three potted components on the D6C are the mute module and the two EQ switching modules. You could try removing them first of all, then see...
I would try removing C606 and measuring it out of circuit. If it still out of spec then try replacing it and cleaning the contamination off the IC...
If pin 5 is low, try checking C606 (10uF/4V tantalum). These can sometimes go short circuit.
Thanks for the update @rahul_unde . I'm glad to hear that it's working again.
Hi @rahul_unde and welcome to Stereo2go. I cannot talk you through a step by step fault finding, there are a few things which you need to check...
I have never tried it as I normally use an oscilloscope. You can try with the meter and try checking the right hand channel to see if there are...
Electrically, the EQ switching boards can be fitted either way round; they are symmetrical. The problem is that I cannot make them as small as the...
Who knows? They would have needed replacing anyway as the Sony potted modules often start to give problems after around 30 years.
Hi @Buckie1967 . PM sent.
I'm pleased to hear that replacing the EQ modules has solved the problem. This was an unusual fault. Normally when EQ modules fail, they cause...
Thanks for the update @-LV- . I'm glad to hear that it has fixed the speed issues. Pin 8 is the 6V B+ connection so the chip would not have...
The CX20084 is a 16 pin IC. The only pin which is not connected in a D6C is pin 6. There is a floating pad for pin 6 but it is not connected. If...
It may be worth checking C608. I had a SMD version D6C, which was running very slowly. C608, which should have been a 3.3uF tantalum, read 65uF...
A USB cord is likely to be a switch mode power supply. I have had at least 2 D6Cs in for repair which have had the CX20084 chips destroyed by...
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