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#16
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i have resoldered mine several times on several different cars. it's a common problem. i'm not so sure it's vibration that causes the problem though. it may be the component on the circuit board itself. some components get warm when in use. the warming and cooling will crack the solder joint. i repaired my mig welder that had the same problem. i've also repaired 2 of my t.v. sets, same thing. no vibration on the t.v.'s. just cracked joints from the heating and cooling of the individual component. with the expansion and contraction the solder gets work hardened and fails. much like bending a piece of metal back and forth until it breaks. that's my 2 cents. J.O.
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#17
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Jeff aka boostnbenz, you had mentioned that the switches can be purchased. Do you mean from like Mouser or something?
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Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc. |
#18
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I just removed the unit and have it totally disassembled. I think!?
Does the black plastic case which holds the boards come apart? I think, from the thread, that I just solder the ones that look brown or loose. At first sight, everything is ok so I'm wondering if this will fix my CCU.(replaced my ignition switch because the CC goes off and on when it wants to.) I'll solder what I think is bad and put it back together. One more thing. The 'AUTO' button falls out. I don't really see anything holding it in except a small ridge on the bottom of the button?
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Rick & Michele in California 1985 300SD Turbo Deisel 300,000+ miles 1963 Mercury Meteor Stationwagon 1959 Montgomery Ward Silver Pigeon Scooter & matching bicycle 1974 IH Scout 4x4 |
#19
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Yes, It rotates out in relation to the switch buttons (push)
Quote:
The button is black, it has a white inside with two tabs, are they broken or there. You can buy just the buttons from MB AUTO BUTTON 123.153 A1268211758
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Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc. |
#20
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Thanks omegabenz, that helped me a lot.
Well, i put it back, or actually just connected the power to it and it seems fine. I'll see because this is what happens. First it will work and after 3-5 min. it will shut off for good.? Hopefully my solder job did the trick. My other question is about the set of 5 lights connected together. I put the lights on and none work. I don't think that they did originally so I'm going to the Benz dealership to buy them. I have some lights with the white body only that looks like its own socket, plugged into two male electrical fittings? or ones that have that white fitting that sit in a black plastic male socket. Either way, do they just 'pull' out or what? Do you think they will have them in stock?
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Rick & Michele in California 1985 300SD Turbo Deisel 300,000+ miles 1963 Mercury Meteor Stationwagon 1959 Montgomery Ward Silver Pigeon Scooter & matching bicycle 1974 IH Scout 4x4 |
#21
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Could you post a picture of your question?
Go to checker, autozone, etc, they have the bulbs. They are very small.
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Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc. |
#22
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When resoldering these old high current connections, I find it useful to use solder wick (a braided copper material) to remove as much as the old solder as possible, or a solder sucker. Then use new solder for the connection.
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Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) |
#23
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Quote:
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Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc. |
#24
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Here is a picture of a bad solder joint before repair. It is the best resolution I could attain. The black ring surrounding the joint is an open crack visible with my 18X magnifying lense.
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http://i284.photobucket.com/albums/l...aman/Fleet.jpg Peach Parts W124.128 User Group. 80 280SL 85 300SD 87 300TD 92 300D 2.5 Turbo 92 300TE 4Matic |
#25
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Back when I wrote that a few years ago there were several online parts places which sold just the fan speed switches for the CCU, it was the white body with everything inside of it. I don't recall if they had the temperature control knob available separately or not.
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Jeff M. Mercedes W123 DIY pages are now located here. 1983 / 1984 300D Sold 2000 CLK430 Cabriolet ~58k Sold 2005 Avalanche 4x4 ~66k |
#26
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Quote:
I resoldered the board twice, and examined it, but I am still haveing problems. I took everything apart and cleaned it, etc. for the w124.133 board, its working great now, but for my w123.153 I cant seem to get the climate control to work properly. Should I check anything else?
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Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc. |
#27
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Did you resolder the pins where the side harnesses connect to?
__________________
Jeff M. Mercedes W123 DIY pages are now located here. 1983 / 1984 300D Sold 2000 CLK430 Cabriolet ~58k Sold 2005 Avalanche 4x4 ~66k |
#28
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yeah, I tried to, but that solder is very hard.
__________________
Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc. |
#29
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sorry to bump this thread, but it seems to be the main dicussion on this.
i just re-soldered every joint on my ccu and it performs the same task as before, just opening vents, letting heat through on defrost, but still no blower at any setting. im not sure if i have to get inside this unit, because it explains three ccu boards but only has pictures of the unit assembeld. what still needs to be checked on this board before i move onto other possible problem areas on the car? my heat/ac has worked for multipe months at a time perfectly so this makes me think its something electical.
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http://i12.photobucket.com/albums/a2...CZoMZDPM-1.jpg
Daily driver: 80 EURO 280CE, english red My car domain Parts car: 81 US 280CE, metallic anthracite grey |
#30
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I tried resoldering several times three different push buttons, but no dice.
I bought a rebuilt one guarenteed for 3 years from programa (cost me about $225 at my wholesale discount). I just need to send back the core ($50 core charge ontop of the $225). I was sick of messing with it. The programma unit works very well thus far. Austin
__________________
Current Stable: 1994 S500 v140, 210k miles, white with grey. Former Mercedes in the Stable: 1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now) 1984 300CD Turbo Diesel 150 k mi sold 1982 300D Turbo Diesel 225 sold 1987 300D Turbo Diesel 255k mi sold 1988 300 CE AMG Hammer 15k mi sold 1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020) 1992 500E 156k mi sold etc. |
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