You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

first place to check is your bypass capacitors.
these will be small ceramic disc caps that go from PC board ground to chassis ground, and are usually found around the edges of the PC board.
if you look at the schematic over on CBT you will find them all in a row in the lower right corner.

i believe there is also one electrolytic cap in these chassis that has its positive lead going to chassis ground, but i can't remember which one it is right now.

i will look at the schematic, but maybe someone else might know which cap im referring to.
LC

EDIT: found it. it's C80 a 22uf electrolytic cap. in the 959 board its on the right side of the PC board towards the middle near the voltage reg. it might be in a different spot in a 939.

[QUOTE="loosecannon, post: 658604, member: 1368"] first place to check is your bypass capacitors. these will be small ceramic disc caps that go from PC board ground to chassis ground, and are usually found around the edges of the PC board. if you look at the schematic over on CBT you will find them all in a row in the lower right corner. i believe there is also one electrolytic cap in these chassis that has its positive lead going to chassis ground, but i can't remember which one it is right now. i will look at the schematic, but maybe someone else might know which cap im referring to. LC EDIT: found it. it's C80 a 22uf electrolytic cap. in the 959 board its on the right side of the PC board towards the middle near the voltage reg. it might be in a different spot in a 939. [/QUOTE]

Top Bottom