For both the W123 300D and the W116 300SD all the "amplifiers" have failed and the 300SD of course has the Chrysler ACC and that has never worked as long as I owned the car.
The mechanical stuff works. The electronic stuff is all dead. Follows Leno's observations about cars. Electronics don't last, and more and more they are not build from discrete components so they really aren't repairable. I predict that you'll never see 40 year old EVs on the road like you do 40 year old W123s. On Tue, Aug 15, 2023, at 19:05, dan penoff.com via Mercedes wrote: > Funny, I rarely had cruise issues in both W123 and W126 cars. When I > did it was almost always an amp in need of recapping and reflowing. > There was a guy on BanzWhirled (I think) that was rebuilding them at > one time, I think I bought the only (rebuilt) amp I’ve ever purchased > for the BaT W123/300D. > > -D > >> On Aug 15, 2023, at 7:33 PM, Jim Cathey via Mercedes <mercedes@okiebenz.com> >> wrote: >> >>> What's the difference? They failed over time and were not repairable >>> despite the cigarette butt workaround. >>>> W123 tachometer design was one of the worst failings of Mercedes in the >>>> 80s. >>> The design was excellent. The mechanical implementation/packaging was not. >> >> Same as with the cruise control. The design is excellent, and if you fix >> the mechanical >> and component vendor problems (crystallized solder joints, Frako >> electrolytic capacitors) >> the subsystem will/would work perfectly for the life of the car. >> >> In practice it might as well be a crappy design, if you can't fix things at >> the component >> and assembly level, but it's not. If you _are_ handy with a soldering iron >> and etc., you >> can fix the thing for free and it lasts forever. Or pay someone like >> Programma do the >> same thing. For a modest price. >> >> Now, the Type-II ACC _is_ a crappy design, and no amount of patching will >> make it any >> better. The best solution there is to replace it with an equivalent, but >> better, design. >> That is not cheap, but it is effective. >> >> As an engineer, these distinctions matter to me. >> >> -- Jim >> >> >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
