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Looking for Help with A/C Fan Speed Knob on V70R

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vtl
Posts: 4928
Joined: 16 Aug 2012, 13:35
Year and Model: 2005 XC70
Location: Boston
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Post by vtl »

cn90 wrote: 26 Mar 2026, 21:50 Virtually all YouTube comments and reddit ppl solved their problems by resoldering as mentioned in the video above.

PS: some years ago, I replaced the volume encoder in my Pioneer Stereo Amplifier at home bc of similar problems. In retrospect, my stereo problem could have been the solder joints but at that time, I was simply replacing the encoder. Anyway, some 15 years later, the stereo is still fine.
Right, I solve wireless Android Auto adapter in wife's car every year, sometimes twice a year, by heating its PCB up in air fryer. Crappy eco-solder... The problem returns regularly. The real fix is to reflow the chip using better solder, but I don't have a BGA reflow station.

Volvo largely sorted its eco-solder out by mid 2000s. I had a 02 V70, had to reflow DIM and CCM. 05 I can't remember reflowing anything in two of them I've had.

If you, the reader, has to reflow anything in Volvo - use lead solder. Cheap assurance you'll be doing it the last time in this corner of the car.

cn90
Posts: 8359
Joined: 31 Mar 2010, 09:54
Year and Model: 2004 V70 2.5T
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Post by cn90 »

Saw this item on eBay, not sure if it is the same as Volvo Fan Volume encoder...

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2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

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