Electronics Forum | Mon Aug 17 15:19:16 EDT 2020 | jmelson
I have a (new to me) Quad QSA-30A that I just got about a week ago. At first, I could get it to go ready most of the time, now it will never go ready. I have traced the ready button into the DPRAM board and the logic is OK all the way into one of t
Electronics Forum | Fri Jan 29 15:39:04 EST 1999 | Chris Jackson
I have a recent design (1 component side only) that calls for 2 surface mounted antenna's (brass plated) to be mounted on a PCB. The problem arises when the PCB is 18x11.25 and has 15 to 20 PCB's in the pallet (IE weight, fixturing to hold the anten
Electronics Forum | Sun Jan 31 14:03:41 EST 1999 | Dean
| I have a recent design (1 component side only) that calls for 2 surface mounted antenna's (brass plated) to be mounted on a PCB. The problem arises when the PCB is 18x11.25 and has 15 to 20 PCB's in the pallet (IE weight, fixturing to hold the ant
Electronics Forum | Tue Feb 16 13:57:50 EST 1999 | Ron Beasley
| | I have a recent design (1 component side only) that calls for 2 surface mounted antenna's (brass plated) to be mounted on a PCB. The problem arises when the PCB is 18x11.25 and has 15 to 20 PCB's in the pallet (IE weight, fixturing to hold the a
Electronics Forum | Tue Feb 02 10:18:56 EST 1999 | Justin Medernach
| I have a recent design (1 component side only) that calls for 2 surface mounted antenna's (brass plated) to be mounted on a PCB. The problem arises when the PCB is 18x11.25 and has 15 to 20 PCB's in the pallet (IE weight, fixturing to hold the ant
Electronics Forum | Wed Aug 26 15:00:08 EDT 2020 | jmelson
That's a rev 1 board, my machine has a rev 2. I have no idea if they are interchangeable. So, I bought a Rev 2 board from Korea. But, I'm flying pretty blind on this. I have traced the ready button signal to a microprocessor pin on the IO_DPRAM bo
Electronics Forum | Sat Aug 22 16:53:32 EDT 2020 | jmelson
I'm trying to diagnose a Quad QSA-30A machine that won't go ready. I have the machine technical drawings, they have overall machine schematics and cable wiring on most of the cables, but that's all. Does anyone have access to the schematics of the
Electronics Forum | Tue Oct 13 11:13:02 EDT 2009 | cyber_wolf
I need the DSP piggy back board that goes on it. Thanks
Electronics Forum | Wed Jun 23 17:24:05 EDT 2004 | kmakiya
Thanks for the response. I did think about boards being tossed about because of nozzle pressure and alignment but I suspect the root cause is handling (people not being careful when they put boards into and removing them from baskets). This is the re
Electronics Forum | Mon Jan 22 09:35:34 EST 2007 | saaitk
Check that your boards haven't been over plated. Too much plating in the hole can slump to the underside of the board during reflow. If you are then press fitting on the underside of the board you can have problems with hole diameter. If the hole is
