Date: Sat, 10 Apr 2004 09:08:41 +0100 From: Johannes H Andersen <johsnospamfitter_0_0_0_0_.com> Subject: Re: Resistor pack
Andrew Stephenson wrote: > > In article <4076ED51.A69E1F13nospamfitter_0_0_0_0_.com> > johsnospamfitter_0_0_0_0_.com "Johannes H Andersen" writes: > > > It happened again! for the third time, the resistor pack packed up. It > > wasn't even hot weather, but I was caught in a long traffic queue. This > > time I'm not going to fork out silly £60 for a new part. I'm going to > > replace the diode on the pack. It is tricky because it has to be wired > > without soldering as the environment is hot. But which diode should I > > use; what are the required volt/amp data? > > Pass on the diode type (although we may assume it is a silicon > utility model). This is the problem, the text is not readable. I may assume a heavy duty 10-20 amp spec silicon type, but it would be nice to know. > As to the soldering: _how_ hot do you expect it > to get in there -- ordinary solder melts at, what, 300C+ ? <g> > But if you do the job, try to use a temperature-controlled iron > (eg Weller) and consider applying heat shunts whilst soldering. > And, of course, use decent multicore solder. (Or am I teaching > granny's grandpa how to suck eggs?) No problem applying some solder, I have all the gear, but the resistor pack obviously gets very hot while operating. This is the reason they fail in the first place.