Little background story: this happenned shortly after installing Placid HD's to feed my two BII. One of them suddenly lost lock and one of the LEDs on all Tridents went dark. So I started checking this and saw that BII input VD is shorted to ground!
After some additional checking I found that the problem was in 1.2V Trident. I've resoldered all the joints on it, removed QP2, even lifted opamp's legs, and still it's input was shorted to ground. As a last resort I removed C1 and after that the short was gone! I never thought that SMD cap can be shorted, but there it was. It showed no signs of blowing or burning, nothing.
Don't know what caused this, as I've fed it with 5V only, and it was working for about 6 months before that. Must be solar radiation or space rays or something :)
So I salvaged similar sized cap from old motherboard, luckily it was 10uF (original C1 was 8.8uF I think), and this Trident is working fine right now (knock on wood). There was no other damage to the BII or Tridents which proves how well-thought they are designed.

Yet, as I understand the dielectric type of the SMD cap must be important, as well as exact value and tolerance, specially in such high quality product.

Russ, can you please provide this information? I just want this Trident to be in the same shape as other two :)

Thanks,
Fedor

Thank you for the info.

Yes, it's very strange indeed :)