wonderful suggestions - thanks all - you guys are the best. -pete
On May 20, 2011, at 11:15 AM, Jim wrote: > > Hi Pete, > > IMO, the weakness with the 3C is in order: > > poor soldering between the Molex connectors and the back plane > > potentially worn out pins in the Molex connectors > > back plane flex > > You can try to re-solder all the connectors, but it really isn't all that > much more effort to just replace them all. That kills the first two issues at > once. > > There are different areas where the back plane will flex when you try to > insert or tighten the cards..............from memory, the worst area was > nearest the master section, but that could vary console to console. What you > want to do is get on your back with good lighting underneath and have someone > press down from above. Work your way from one end to the other and see if you > can find the areas where movement occurs. Depending on how much and where, > you may be able to brace things to improve this. Watch particularly the areas > where any two back plane section boards meet; these seem to be problematic. > > I'd start with replacing all the connectors, if you can't do that now, > re-solder them all; BTW, a good way to find bad solder joints is to use the > same process of finding back plane flex. Good luck! > > Regards, Jim > > > At 09:27 AM 5/20/2011, you wrote: >> bros - >> >> continuing the surely long and possibly never ending list of questions on >> my series IIIc restoration project... >> >> i am seeing the following behavior on the input modules (as well as the cue >> modules)... >> i'm feeding the line in with the multitrack output, and as i bring up the >> fader (and the input gain) i get weak, fuzzy signal... until i jam the gain >> way up there (very quickly) and the channel then "comes alive" so to speak. >> i can then bring it back down to a sensible level and all is OK. >> >> what problem is this behavior indicative of? bad connection to the >> motherboard? or a component problem in the line in circuit? at the >> electrical level, how is a dodgy connection "made OK" (in a sense) by >> pumping a greater voltage through it? >> >> >> thanks all - >> >> pete------ >> >> View the list online at: http://www.mail-archive.com/[email protected] >> >> You can unsubscribe at anytime by sending an email to >> mailto:[email protected] with "unsubscribe neotek" in the message >> body. If you have any difficulties, or questions --please send an email to >> mailto:[email protected]. >> >> The Neotek list is lovingly hosted by Catapult Web. Remember that any >> message or reply sent to the list will be automatically forwarded to all >> subscribers. >> >> Vive Le Neotek! >> >> Thanks. > > > ------ > > View the list online at: http://www.mail-archive.com/[email protected] > > You can unsubscribe at anytime by sending an email to > mailto:[email protected] with "unsubscribe neotek" in the message body. > If you have any difficulties, or questions --please send an email to > mailto:[email protected]. > > The Neotek list is lovingly hosted by Catapult Web. Remember that any message > or reply sent to the list will be automatically forwarded to all subscribers. > > Vive Le Neotek! > > Thanks. > ------ View the list online at: http://www.mail-archive.com/[email protected] You can unsubscribe at anytime by sending an email to mailto:[email protected] with "unsubscribe neotek" in the message body. If you have any difficulties, or questions --please send an email to mailto:[email protected]. The Neotek list is lovingly hosted by Catapult Web. Remember that any message or reply sent to the list will be automatically forwarded to all subscribers. Vive Le Neotek! Thanks.
