Hi I Finish the assembly and looks like everything works except I have low volume and I check the BA6110 voltages, without the chip I get:
Pins
1 = 5.33
2= 5.33
3= 0
4=0
5=0
6= 5.33
7= 5.33
8=0
9= 11.95
I think I need 5.33 at pin 8 can anyone can help me, need to know what to change-check to solve this
THanks
Low Volume / 0v at Pin 8 BA6110
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- antto
- Posts: 1636
- Joined: Thu Apr 15, 2010 3:21 pm
Re: Low Volume / 0v at Pin 8 BA6110
pin8 is the output from the amp, so if the chip isn't in there - the other side is connected to a capacitor, so i don't think you get any voltage normally
put the chip back and then you should have some voltage there
also, check (with a scope or small headphones) if you hear sound at the volume pot
put the chip back and then you should have some voltage there
also, check (with a scope or small headphones) if you hear sound at the volume pot
- Macotronic
- Posts: 4
- Joined: Fri May 30, 2014 11:29 am
Re: Low Volume / 0v at Pin 8 BA6110
Thanks will check this at home
- Macotronic
- Posts: 4
- Joined: Fri May 30, 2014 11:29 am
Re: Low Volume / 0v at Pin 8 BA6110
HI again I insert the ba6110 and it just register the correct voltages, also check the phones ic and all the voltages are according, making some test it appear everything works, leds, filter, etc just have very low volume, if i put all the way up my interface could hear like 3/4 level on other synths
Need some help to trouble shot, I assembly all the xox without testings, and cant find a guide to check the parts of the circuit being assembled, also im a noob on this so if anyone can help me giving me a guide to check or something shure i will pay some beers for the help.
antto can you help me?
thanks
Need some help to trouble shot, I assembly all the xox without testings, and cant find a guide to check the parts of the circuit being assembled, also im a noob on this so if anyone can help me giving me a guide to check or something shure i will pay some beers for the help.
antto can you help me?
thanks
- antto
- Posts: 1636
- Joined: Thu Apr 15, 2010 3:21 pm
Re: Low Volume / 0v at Pin 8 BA6110
well
i would start checking the components for proper value and orientation, start from the VCA, mixer, VCF, envelopes.. etc
here's the schematic: http://wiki.openmusiclabs.com/wiki/x0xb ... board2.png
and for the actual components and which component goes where, you can check that here: http://ladyada.net/make/x0xb0x/fab/parts.html or here: http://www.willzyx.com/pages/x0xb0x-com ... parts-list
i would start checking the components for proper value and orientation, start from the VCA, mixer, VCF, envelopes.. etc
here's the schematic: http://wiki.openmusiclabs.com/wiki/x0xb ... board2.png
and for the actual components and which component goes where, you can check that here: http://ladyada.net/make/x0xb0x/fab/parts.html or here: http://www.willzyx.com/pages/x0xb0x-com ... parts-list
- Macotronic
- Posts: 4
- Joined: Fri May 30, 2014 11:29 am
Re: Low Volume / 0v at Pin 8 BA6110
Hey Antto just need to clarify this, im going to check this on the week end, but just to check everything once have this questions:
- To check the tranies the collectors should be 12v ?
- how i can check if the diodes works?
-to check if I have a faulty ba6110 need a new one right?, if the voltages are as indicated its ok or can be faulty?
- any advice on checking components?
thanks
- To check the tranies the collectors should be 12v ?
- how i can check if the diodes works?
-to check if I have a faulty ba6110 need a new one right?, if the voltages are as indicated its ok or can be faulty?
- any advice on checking components?
thanks
- antto
- Posts: 1636
- Joined: Thu Apr 15, 2010 3:21 pm
Re: Low Volume / 0v at Pin 8 BA6110
which transistors do you mean?
for the diodes - first check visually if they are oriented the right way
as for whether they work, that's a bit tricky
most multimeters usually have a "diode" mode but it might not always work when the diode is in the circuit with other components
you can try it, the power should be OFF, set the multimeter to diode mode and measure around the diode
the multimeter should display the diode voltage drop iirc (somewhere about ~0.5 or ~0.6V for the small diodes in the x0x)
also, since you use BA6110, make sure you solder it into the IC15B slot, and not in IC15A...
for the diodes - first check visually if they are oriented the right way
as for whether they work, that's a bit tricky
most multimeters usually have a "diode" mode but it might not always work when the diode is in the circuit with other components
you can try it, the power should be OFF, set the multimeter to diode mode and measure around the diode
the multimeter should display the diode voltage drop iirc (somewhere about ~0.5 or ~0.6V for the small diodes in the x0x)
also, since you use BA6110, make sure you solder it into the IC15B slot, and not in IC15A...
Please be positive and constructive with your questions and comments.