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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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HU850 in '05 V70/D5 acting up...Views : 2814 Replies : 24Users Viewing This Thread : |
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Mar 24th, 2019, 23:29 | #11 |
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Last Online: Aug 4th, 2023 12:59
Join Date: Jun 2012
Location: Kent, Cranbrook
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Just for the record, what do I need to run the radio on the workbench?
Are there standard plugs available and is there a pinout diagram anywhere? |
Jul 13th, 2019, 00:14 | #12 |
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Last Online: Dec 5th, 2020 22:59
Join Date: Jan 2008
Location: cambridge
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did you have any success with this repair?
i figured it may be a better idea swapping for a double din radio but that seems like a real bag of worms - satnav, dolby, steering controls, phone. i have them all and one by one i seem to find issues with aftermarket radios, and each of these features. so it looks like a repair is the only practical solution. unless anyone has any further advice. Late 2005 XC70 G |
Jul 13th, 2019, 11:20 | #13 |
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Last Online: Jul 26th, 2021 22:24
Join Date: Jun 2013
Location: Coldnada
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You can also swap a used HU-650 unit, preferably one from the same year. Connecting a HU-650 should be the reverse of this video https://www.youtube.com/watch?v=PGQJWxoc5aE - there should be another connector + a DIN one hidden there behind the unit that would plug into the HU-650. The HU-650 will not use the amplifier or the center speaker, but should sound fine otherwise. The HU-650 also has only 1 CD. The car battery must be disconnected during such swap.
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Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c |
Jul 14th, 2019, 20:48 | #14 | |
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Last Online: Oct 9th, 2021 01:33
Join Date: Feb 2019
Location: Oxfordshire
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Quote:
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Jul 15th, 2019, 12:25 | #15 |
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Last Online: Oct 20th, 2023 19:13
Join Date: Oct 2018
Location: Rochdale
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Following this with some interest, mine often cuts out on all radio, pulling the fuse a few times gets it back, but it’s am and fm that goes. A little bit of me suspects the amplifier in the boot or a loose connection to an aerial. It’s an S60.
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Jul 15th, 2019, 12:40 | #16 | |
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Last Online: Oct 25th, 2023 15:33
Join Date: Feb 2012
Location: Wakefield
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Quote:
Sometimes I can turn the radio on and nothing, then as I'm driving along it comes on. Sometimes it cuts out whilst driving and switching between bands or stations fixes it. Sometimes it cuts out and I can't get it back by doing anything, but the CD changer and GROM (on the 10CD changer input) always both work fine, which makes me think it's not the amplifier, but possibly the aerial circuitry or a dry joint somewhere on the PCB. |
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Jul 15th, 2019, 12:48 | #17 | |
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Last Online: Oct 25th, 2023 15:33
Join Date: Feb 2012
Location: Wakefield
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Quote:
http://2.lpoy.suheila-schamanismus.d...io-wiring.html |
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Jul 15th, 2019, 12:50 | #18 | |
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Last Online: Oct 20th, 2023 19:13
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Location: Rochdale
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Quote:
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Jul 16th, 2019, 20:52 | #19 |
Master Member
Last Online: Mar 16th, 2024 08:49
Join Date: Oct 2001
Location: Andover, Hants
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I had a spare hu850 (not working) which I have got the following identification for the integrated circuits on the main board. Sadly it looks like the audio switching is handled by a microprocessor rather than a discrete chip...
Ic51 - mcu? mc908a260acfu 2l87j Qqaq0417 7c Ic801 - ? Nec d0703035aygc M12 0450kp001 Ic101 - voltage reg? ti lm053a 44k 047d Ic102 - dual op amp? 4565 436 Jrc Ic370 - dual op amp? 2904 4294 Jrc Ic37 - quad op amp? 2902 4294 Jrc Ic803 - flash? L02 4t52w Ic52 - canbus txr Philips tja1040 4k135 4441y
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Previously held: 264GLE;S60 SE 2.0T;XC70 SE LUX D5 (163);V70 SE (170);V70 SE D5 (163) Currently held: XC90 SE LUX (MY12 200), XC70 SE D5 (MY06 185); V70 SE D5 (MY07 185) |
Aug 10th, 2020, 12:43 | #20 |
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Last Online: Mar 17th, 2024 09:35
Join Date: Jul 2015
Location: London
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My HU850 has also started experiencing the sporadic FM radio issue.
Is there a known repair for this? If so, who can perform it? |
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