i’m a inexperienced DIY builder (put together 3 modules so far, and one is having problems as per below).
i’m putting together a Black Noise Goma Pro module, https://blacknoisemodular.com/products/goma-pro which is an attenuverter mixer amplifier and there’s a 5 way switch on one of the inputs that’s dead at 2x and 10x amplification. the SMD’s come already attached to the panel.
i contacted black noise and alex told me that it would be a solder issue or else a damaged resistor, and he told me which resistors and which solder connections.
the solder connections seem good, so i assume it must be the resistors, and the settings that aren’t working are connected to two resistors that I touched with my solder iron. however, people are telling that it’s very hard to damage resistors, while i’ve read elsewhere that it’s very easy to damage them just by touching the top of them with something hot? no idea where these totally contradictory statements come from…
at first the 2x the 10x were dead, and then i got the 10x to work by adding more solder to the THT solder switch connections (so there was initially a solder issue with the 10x), but then when the 2x still wasn’t working i tried adding some more solder to the relevant 2x resistor and then the 10x was dead again. I had accidentally touched the 10x resistor with my iron as i was trying to add solder to the 2x so I’m assuming i caused this at that time.
is it that easy to damage resistors? why are people saying opposing things?
are there some resistors that are better quality and harder to damage? which ones?
the ones in question are marked
01D (100kOhms 1% 0603 format)
68C (49.9kOhms 1% 0603 format)
also, i’m looking at resistors on amazon and 49.9k seems rare - you can get folders full of dozens of different resistor values and they’re always 51k never 50k or 49.9k - those only come separately.
looking on digikey or mouser i see the specifications i need but prices vary and so does the form to a certain extent and the power specifications in terms of watts - is there anything i should be looking for or avoiding?
i’m putting together a Black Noise Goma Pro module, https://blacknoisemodular.com/products/goma-pro which is an attenuverter mixer amplifier and there’s a 5 way switch on one of the inputs that’s dead at 2x and 10x amplification. the SMD’s come already attached to the panel.
i contacted black noise and alex told me that it would be a solder issue or else a damaged resistor, and he told me which resistors and which solder connections.
the solder connections seem good, so i assume it must be the resistors, and the settings that aren’t working are connected to two resistors that I touched with my solder iron. however, people are telling that it’s very hard to damage resistors, while i’ve read elsewhere that it’s very easy to damage them just by touching the top of them with something hot? no idea where these totally contradictory statements come from…
at first the 2x the 10x were dead, and then i got the 10x to work by adding more solder to the THT solder switch connections (so there was initially a solder issue with the 10x), but then when the 2x still wasn’t working i tried adding some more solder to the relevant 2x resistor and then the 10x was dead again. I had accidentally touched the 10x resistor with my iron as i was trying to add solder to the 2x so I’m assuming i caused this at that time.
is it that easy to damage resistors? why are people saying opposing things?
are there some resistors that are better quality and harder to damage? which ones?
the ones in question are marked
01D (100kOhms 1% 0603 format)
68C (49.9kOhms 1% 0603 format)
also, i’m looking at resistors on amazon and 49.9k seems rare - you can get folders full of dozens of different resistor values and they’re always 51k never 50k or 49.9k - those only come separately.
looking on digikey or mouser i see the specifications i need but prices vary and so does the form to a certain extent and the power specifications in terms of watts - is there anything i should be looking for or avoiding?
Statistics: Posted by starsixnine — Thu Jan 02, 2025 10:23 am — Replies 2 — Views 40