Ok, glad that did it. That TSSOP package is the finest pitch part on the board... soldering defects are hard to spot, even with magnification.
Scott KaroR wrote: > > > I really appreciate a man who knows his equipment. Started poking around > ST202 and found that if I pressed down on it every thing calmed down ie > voltage and temp stabilized don't know if it was a cap or pin on the > chip but I reheated everything with my needle point iorn tip and all is > stable now I will install it in am and cross my fingers. Thanks Scott. :-} > > --- In [email protected] <mailto:tracker2%40yahoogroups.com>, > Scott Miller <sc...@...> wrote: > > > > > That's most often a problem with the cable or the port, but I've seen it > > happen at least once when there was a cold solder joint on one of the > > capacitors near the ST202 chip. If you get a chance to open it up, > > check out that area first. > > > > Scott > > > > KaroR wrote: > > > > > > > > > I am new to Tracker 2 but as soon as it arrived after quite a wait, I > > > tried to program in my call sign but found that it wouldn't accept > being > > > written to. I am using otwincfg program. I get "verify error at block > > > 0xf400" then "write failed". Another funny thing, on the diagnostics > > > page the voltage and temp are going all over the place. The unit is > > > being run from a regulated known good supply no ripple, the cable I > used > > > to program is the same serial cable "nul modem" I use to program my > > > opentracker+. To verify all is ok with the computer, programing cable > > > and power supply, I brought in my opentracker+ from my truck made a > few > > > changes to it, reprogrammed it and read the changes back afterward. > The > > > opentracker+ is now back and working correctly but the Tracker 2 is > > > still DOA. What am I doing wrong ? > > > > > > > > > >
