yodabe Posted January 2, 2011 Report Posted January 2, 2011 (edited) hi all for 1 yac i need to solder other components ? original link Uploaded with ImageShack.us tested the module and no sound tested with mbfm_interconnection_test_v2 the connection its ok tested with mbfm_testtone_v1c no sound in out 1 or 2 i got a popping noise sound when turn on the mbfm ? best regards Edited January 2, 2011 by nILS resized the pic and attached it to the post Quote
nILS Posted January 2, 2011 Report Posted January 2, 2011 That's all the parts you need (if the components on the bottom side of the board are soldered correctly and there's a jumper wire under IC3). * Got a pic of the underside? * Are the voltages ok (especially the bipolar supply voltage for the OPAMPs)? Quote
yodabe Posted January 2, 2011 Author Report Posted January 2, 2011 * Got a pic of the underside? Uploaded with ImageShack.us Uploaded with ImageShack.us * Are the voltages ok (especially the bipolar supply voltage for the OPAMPs)? yep +15v and -15v 2x1.6amp 50va (my tr808 clone psu) Uploaded with ImageShack.us thx for your help best regards Quote
phunk Posted January 2, 2011 Report Posted January 2, 2011 (edited) erm...dont get me wrong but that soldering looks really aweful and you got several bridges at the smd chips and all over the place.That´s very likely the reason that it is not working. I see bridges at pin 8/9 and 13/14 of the OPL. The Chips look like they would "stand" on solder. Then you got a bridge in front of the nr. 1 pin of the OPL between the third and fourth trace...and so on.. What iron did u use? Small tip and regulated is highly recommended especially when dealing with SMD parts. Its not only that you get bad and bulky joints but you "burn" the chips using an unregulated iron with a big tip. What you can do now is "cleaning" the PCB. That means that you get yourself some solder wick and desolder the SMD parts (with a decent iron!) and resolder the obvious bridges. Do that carefully. Dont heat the SMD parts for too long and with to much power. They will fry if they havent already. I could imagine you already broke the parts but just try it. Watch this to get an impression how to solder SMD. http://store.curiousinventor.com/guides/Surface_Mount_Soldering/101/ Edited January 2, 2011 by phunk Quote
nILS Posted January 2, 2011 Report Posted January 2, 2011 Oof. * Check continuity between all adjacent pins everywhere... Quote
yodabe Posted January 2, 2011 Author Report Posted January 2, 2011 i re tested the continuity and no bridge in smd chip ... Quote
yodabe Posted January 3, 2011 Author Report Posted January 3, 2011 erm...dont get me wrong but that soldering looks really aweful and you got several bridges at the smd chips and all over the place.That´s very likely the reason that it is not working. I see bridges at pin 8/9 and 13/14 of the OPL. The Chips look like they would "stand" on solder. Then you got a bridge in front of the nr. 1 pin of the OPL between the third and fourth trace...and so on.. What iron did u use? Small tip and regulated is highly recommended especially when dealing with SMD parts. Its not only that you get bad and bulky joints but you "burn" the chips using an unregulated iron with a big tip. What you can do now is "cleaning" the PCB. That means that you get yourself some solder wick and desolder the SMD parts (with a decent iron!) and resolder the obvious bridges. Do that carefully. Dont heat the SMD parts for too long and with to much power. They will fry if they havent already. I could imagine you already broke the parts but just try it. Watch this to get an impression how to solder SMD. http://store.curiousinventor.com/guides/Surface_Mount_Soldering/101/ i use an ersa 3cs/331 30w and 1.5mm tips the chip are not burned i desolded it very carefully it does not have to heat only tepid check my new pic with light back the board thx for your help Quote
Flemming Posted January 3, 2011 Report Posted January 3, 2011 Aren't you missing some components south of IC6? Best solution would be to just solder the missing parts, i think - all done :thumbsup: that way you will also be ready for an extra YAC if you find one at some point. It's not like it will be very expensive or anything :tongue: Quote
nILS Posted January 3, 2011 Report Posted January 3, 2011 Aren't you missing some components south of IC6? The missing components (C14, C19, C13, R13, R10, R12, R15, C25, C26, C29, R11, R14, C33, R20, R21, R22, R23, C34, R3, C11, C22, C21, C12, C30) are only relevant for the second YAC (see http://ucapps.de/mbhp_opl3.html). Leaving them out will not cause any problems. Make sure to check for bridges further away from the SMD chips as well - better to be on the safe side :) If you're positive that you don't have any bridges, remove the opamps and see if you get an audio signal @ IC3:10 and IC3:14. That'll help to tell us if the problem occurs before or after the opamps. Quote
JRock Posted January 3, 2011 Report Posted January 3, 2011 Read I had problems with the YAC. I am still not sure if it was the chips I got or my Surface mount soldering. Those little bastards are finicky. I was super meticulous with the second set I got and Lo and Behold! I Haz FM! I do know that I had problems with my GM5 and upon closer inspection it looked like it probably could have done with a more thorough soldering job. Unfortunately, when I went to pull him off, a couple of his legs went bye bye. :bye: Poor little guy never had a chance. Luckily the YACs seem a lot sturdier. Check pins 21 and 22 on the YMF with a headphones and a resistor or something like that to see if your getting audio out of it. Quote
yodabe Posted January 3, 2011 Author Report Posted January 3, 2011 (edited) Check pins 21 and 22 on the YMF with a headphones and a resistor or something like that to see if your getting audio out of it. i get this waveform on opl pin 21 and 22 which value for the resistor on headphone ? Uploaded with ImageShack.us Edited January 3, 2011 by yodabe Quote
yodabe Posted January 3, 2011 Author Report Posted January 3, 2011 (edited) remove the opamps and see if you get an audio signal @ IC3:10 and IC3:14. That'll help to tell us if the problem occurs before or after the opamps. get this from ic3 pin 10 Uploaded with ImageShack.us and this on ic3 pin 14 Uploaded with ImageShack.us thx all module Uploaded with ImageShack.us Edited January 3, 2011 by yodabe Quote
benuron Posted January 3, 2011 Report Posted January 3, 2011 (edited) The cable link between the core and opl3 is a bit long...cut it by half or third. Edited January 3, 2011 by benuron Quote
yodabe Posted January 3, 2011 Author Report Posted January 3, 2011 i retested the interconnetion test i have not tested if the other pin is to 0v is the problem ! check this tab with the votages Uploaded with ImageShack.us Quote
nILS Posted January 4, 2011 Report Posted January 4, 2011 Check pins 21 and 22 on the YMF with a headphones and a resistor or something like that to see if your getting audio out of it. Those are digital pins - why would you "listen" to what comes out of them? There's no audio before the YACs. By default all unselected pins are 0V Hmm. 1) Remove the LCD for testing (as it shares pins with the OPL3) 2) Check for shorts on the core>opl3 connection 3) Recheck the wiring (http://ucapps.de/mbhp/mbhp_opl3_interconnections.pdf) 4) Shorten the cable between core and opl module Quote
yodabe Posted January 4, 2011 Author Report Posted January 4, 2011 Those are digital pins - why would you "listen" to what comes out of them? There's no audio before the YACs. Hmm. 1) Remove the LCD for testing (as it shares pins with the OPL3) 2) Check for shorts on the core>opl3 connection 3) Recheck the wiring (http://ucapps.de/mbhp/mbhp_opl3_interconnections.pdf) 4) Shorten the cable between core and opl module 1) Remove the LCD for testing (as it shares pins with the OPL3) tested the same 2) Check for shorts on the core>opl3 connection checked no shorts and tested with other core module the same !!! 3) Recheck the wiring (http://ucapps.de/mbh...connections.pdf) checked and rechecked no error 4) Shorten the cable between core and opl module not tested thats possible is only the cable in fault ? other test try other pic the first is a 18f457 try on 18f4685 the same tested with no eeprom on core board the same tested only the core the same error on d0 d1 d2 d3 thx Quote
nILS Posted January 4, 2011 Report Posted January 4, 2011 [x] use the correct processor/MIOS combination. Also, remove the PIC for a test and see if the D0-D3 lines stay high. Quote
yodabe Posted January 4, 2011 Author Report Posted January 4, 2011 [x] use the correct processor/MIOS combination. Also, remove the PIC for a test and see if the D0-D3 lines stay high. re tested without the pic and 0v on D0-D3 Quote
yodabe Posted January 4, 2011 Author Report Posted January 4, 2011 [x] use the correct processor/MIOS combination. What's the best combination ? Quote
yodabe Posted January 4, 2011 Author Report Posted January 4, 2011 my core module pics check if you see somthing wrong Uploaded with ImageShack.us thx Quote
yodabe Posted January 4, 2011 Author Report Posted January 4, 2011 re i try new upload mios 1.9g and mbfm 1.1d modified asm for my encoders en recompiled for 18f4685 not work 4.77v on d0-d3 try lcd in 4bit mode + pull up resistor for the can bus not work too im lost ! IN readme.txt : By default all unselected pins are 0V The SID pins are mapped to following keys: C : Pin J2_1:RS = 5V C#: Pin J2_1:A0 = 5V D : Pin J2_1:A1 = 5V D#: Pin J2_1:WR = 5V E : Pin J2_1:D0 = 5V F : Pin J2_1:D1 = 5V F#: Pin J2_2:D2 = 5V G : Pin J2_2:D3 = 5V G#: Pin J2_2:D4 = 5V A : Pin J2_2:D5 = 5V A#: Pin J2_2:D6 = 5V B : Pin J2_2:D7 = 5V the sid ? not a sid is opl module are you 100% sure if the d0-d3 is setup to 0v in interconection test ? maybe anybody test in your mdfm if you have 4.7v on d0-d3 ? on my all core module is 4.7v to d0-d3 ! thx Quote
TK. Posted January 4, 2011 Report Posted January 4, 2011 Hi, the interconnection test isn't prepared for PIC18F4685; you also need a special modification in the MBFM firmware to get access to the OPL3 module. As I'm planning to upgrade my own MBFM to PIC18F4685 soon, I will be able to adapt the applications so that you are able to continue. Best Regards, Thorsten. Quote
yodabe Posted January 5, 2011 Author Report Posted January 5, 2011 Hi, As I'm planning to upgrade my own MBFM to PIC18F4685 soon, I will be able to adapt the applications so that you are able to continue. Best Regards, Thorsten. its very cool TK thx but i have 18f452 with mbfm on (my first test) i retest the interconnection with this and feedback thx best regards Quote
yodabe Posted January 5, 2011 Author Report Posted January 5, 2011 the connection is ok with 18f452 all unselected pins are 0V but no sound in test tone only one plopping sound when turn on/off I will buy a new opl and dac ! thx best regards Quote
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