I saw other threads on here regarding but I got a 3.9 board and I cannot figure out why it is happening. But Slow motion sound and deep voices happens so often. The biggest time I notice if the battery gets unplugged then plugged back in too fast. I notice if I remove the SD card then remove battery and reinsert it works. Nothing is touching the C7-c8 chip. This is frustrating.
Here is another thread for context:
If it’s slow, but not super crackly or anything, it’s almost certainly a clock circuit problem. Most of the time that’s caused by something touching it, but it could also be flux, gunk or metal shavings. I recommend giving the board a cleaning and see if that helps.
If not, it might just be something wrong with the board, or the components on the board, in which case you might need to contact the seller and see if you can get a replacement board.
Yes no cracking. Ok I will give another cleaning and try and get this working. It seems very intermittent.
I use 99% isopropyl alcohol (liquid kind, from my local pharmacy - no gel) & a supper soft toothbrush to clean and a hair dryer set on max speed with NO heat (cold) to dry.