Phatline Posted September 19, 2022 Report Share Posted September 19, 2022 hei. i built the mb-6582 from an old kit... the 3 slave cores, provides a working a LCD, but not on the Master-Core, there i only see black-blocks... when i boot up the SID, i have Blocks all over the screen, then it refreshes, and i have blocks on first and third row off the display. What can be the problem? I already measured the connections from J15 to the PICs Pins. checked all J15 and PIC pins for Shortens against Neighor pins, and to ground and to +5V also removed all Shiftregisters, and Bank-sticks, and SIDs (is it necessery to have the Shiftregisters connected?) I also checked the SI-Pin off the HC165 - but they are not grounded or 5V... i also placed in a PIC from a working unit - and it is still black (so it is not the PIC) I already replaced the oscillator i checked all Resistors for their value - seems to be right... (i can upload new code, so it boots up proberly... also newest bootloader is on the PICs) - mike Quote Link to comment Share on other sites More sharing options...
Noise-Generator Posted September 20, 2022 Report Share Posted September 20, 2022 (edited) Looks like this is just a very easy problem with contrast an lumi potis? I would look out for bad connections, also. I guess it's just a mechanical problem not complicated. Edited September 20, 2022 by Noise-Generator Quote Link to comment Share on other sites More sharing options...
Phatline Posted September 21, 2022 Author Report Share Posted September 21, 2022 thx got it... it was the ground pins... which are surroundet wit massive groundplanes (without traces that could make a thermal decouple). i heatet the.groundplane.with hot airgun,.and soldered all groundpins.again... worked " now.it says "sid 4 not aviable no mb net response" core is working, checked it by connecting a lcd to it... also reuploaded the firmware with id3... is the net a com between cores or between sid and core? Quote Link to comment Share on other sites More sharing options...
Phatline Posted September 22, 2022 Author Report Share Posted September 22, 2022 about MB-NET http://www.ucapps.de/midibox_sid/mbsid_v2_communication.pdf http://www.ucapps.de/mbhp/mbhp_core_v3.pdf http://www.midibox.org/dokuwiki/lib/exe/fetch.php?media=mb-6582:mb-6582_base_pcb_r2_color.pdf already resoldered all pins on core 3 and 4 replaced the pic 4 with a new pic... measured the can bus wires and diodes, replaced the Diode for core 4 removed R6 from core 4 reuploaded code for core 1 (aka 0) on the automatic reboot of mios, it didnt tell me that sid4 no mb-net... but after power off-on it says again: no response... ok it also tells me on startup: 1st screen: mios v 1.9h tk.... 2nd screen: [not here!] version 2.044 launching cs (what is not here????) 3rd screen: sid 4 not aviable no mb net response Quote Link to comment Share on other sites More sharing options...
Noise-Generator Posted September 24, 2022 Report Share Posted September 24, 2022 (edited) Guess you're at the right side of finding it. Also guess it's just a bad solder point, connection thing. Edited September 24, 2022 by Noise-Generator Quote Link to comment Share on other sites More sharing options...
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