Re: [MBZ] W123 type III control control question
You have to take the buttons off to get the cover off. Use a pair of pliers and carefully pull them straight out, one at a time. And no, you have to take all the ancillary stuff off, including the temperature wheel and fan speed buttons. There are plastic covers on all sides that you have to remove to get at the circuit boards. Dan --- On Thu, 4/21/11, andrew strasfogel wrote: > From: andrew strasfogel > Subject: Re: [MBZ] W123 type III control control question > To: "Mercedes Discussion List" > Date: Thursday, April 21, 2011, 10:22 PM > Wow that's great - thanks!. > > Is it possible to expose the circuit board alone without > removing the > temperature wheel and all the push buttons? I've had > problems in the past > reinserting those push buttons... they tended to fly > off when I would press > another button. > > On Thu, Apr 21, 2011 at 10:12 PM, LWB250 > wrote: > > > Here's a pictorial of the R&R. I also have > pics of disassembly of the PB > > unit as well...drop me a note off list and I'll get > them to you. > > > > http://gallery.me.com/dpenoff#100281 > > > > Dan > > > > > > --- On Thu, 4/21/11, andrew strasfogel > wrote: > > > > > From: andrew strasfogel > > > Subject: Re: [MBZ] W123 type III control control > question > > > To: "Mercedes Discussion List" > > > Date: Thursday, April 21, 2011, 9:32 PM > > > Great suggestions - thanks. > > > > > > > > > On Thu, Apr 21, 2011 at 9:15 PM, Jim Cathey > > > > wrote: > > > > > > > What other possibile avenues should I > trouble shoot? > > > >> > > > > > > > > Plenty of these pushbutton arrays have > developed > > > cracked > > > > solder joints internally. A variety of > odd > > > symptoms > > > > ensue. It's an easy DIY if you know > which end of > > > a > > > > soldering iron to grab. > > > > > > > > -- Jim > > > > > > > > > > > > > > > > > > > > ___ > > > > http://www.okiebenz.com > > > > For new and used parts go to > 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 > > > For new and used parts go to 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 > > For new and used parts go to 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 > For new and used parts go to 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 For new and used parts go to 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
Re: [MBZ] W123 type III control control question
Wow that's great - thanks!. Is it possible to expose the circuit board alone without removing the temperature wheel and all the push buttons? I've had problems in the past reinserting those push buttons... they tended to fly off when I would press another button. On Thu, Apr 21, 2011 at 10:12 PM, LWB250 wrote: > Here's a pictorial of the R&R. I also have pics of disassembly of the PB > unit as well...drop me a note off list and I'll get them to you. > > http://gallery.me.com/dpenoff#100281 > > Dan > > > --- On Thu, 4/21/11, andrew strasfogel wrote: > > > From: andrew strasfogel > > Subject: Re: [MBZ] W123 type III control control question > > To: "Mercedes Discussion List" > > Date: Thursday, April 21, 2011, 9:32 PM > > Great suggestions - thanks. > > > > > > On Thu, Apr 21, 2011 at 9:15 PM, Jim Cathey > > wrote: > > > > > What other possibile avenues should I trouble shoot? > > >> > > > > > > Plenty of these pushbutton arrays have developed > > cracked > > > solder joints internally. A variety of odd > > symptoms > > > ensue. It's an easy DIY if you know which end of > > a > > > soldering iron to grab. > > > > > > -- Jim > > > > > > > > > > > > > > > ___ > > > http://www.okiebenz.com > > > For new and used parts go to 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 > > For new and used parts go to 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 > For new and used parts go to 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 For new and used parts go to 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
Re: [MBZ] W123 type III control control question
Here's a pictorial of the R&R. I also have pics of disassembly of the PB unit as well...drop me a note off list and I'll get them to you. http://gallery.me.com/dpenoff#100281 Dan --- On Thu, 4/21/11, andrew strasfogel wrote: > From: andrew strasfogel > Subject: Re: [MBZ] W123 type III control control question > To: "Mercedes Discussion List" > Date: Thursday, April 21, 2011, 9:32 PM > Great suggestions - thanks. > > > On Thu, Apr 21, 2011 at 9:15 PM, Jim Cathey > wrote: > > > What other possibile avenues should I trouble shoot? > >> > > > > Plenty of these pushbutton arrays have developed > cracked > > solder joints internally. A variety of odd > symptoms > > ensue. It's an easy DIY if you know which end of > a > > soldering iron to grab. > > > > -- Jim > > > > > > > > > > ___ > > http://www.okiebenz.com > > For new and used parts go to 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 > For new and used parts go to 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 For new and used parts go to 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
Re: [MBZ] W123 type III control control question
Great suggestions - thanks. On Thu, Apr 21, 2011 at 9:15 PM, Jim Cathey wrote: > What other possibile avenues should I trouble shoot? >> > > Plenty of these pushbutton arrays have developed cracked > solder joints internally. A variety of odd symptoms > ensue. It's an easy DIY if you know which end of a > soldering iron to grab. > > -- Jim > > > > > ___ > http://www.okiebenz.com > For new and used parts go to 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 For new and used parts go to 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
Re: [MBZ] W123 type III control control question
What other possibile avenues should I trouble shoot? Plenty of these pushbutton arrays have developed cracked solder joints internally. A variety of odd symptoms ensue. It's an easy DIY if you know which end of a soldering iron to grab. -- Jim ___ http://www.okiebenz.com For new and used parts go to 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
Re: [MBZ] W123 type III control control question
Monovalve electrical failure? I believe the default is "full heat."
Check continuity on the monovalve and re-seat the connector.
Allan
andrew strasfogel writes:
> Her 1985 300CD turbodiesel with the Type III automatic climate control panel
> (horizontal push buttons) has a heating issue.
>
> Once the engine warms up, the blower will blast out hot air that cannot be
> mitigated through the temperature wheel. She needs to hit one of the AC
> buttons. Then the AC engages and the will air cool off. We checked the
> monovalve insert and it is intact, so there must be some other cause for
> this malfunction. What other possibile avenues should I trouble shoot?
> TIA,
>
> Andrew
> 1983 and 1985 300TD with normal heating and cooling ("blows ice cold!")
> ___
> http://www.okiebenz.com
> For new and used parts go to 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
>
--
1983 300D
___
http://www.okiebenz.com
For new and used parts go to 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
