home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > maintenance & nonperformance

Reply
 
Thread Tools Display Modes
Old 03-05-2010, 04:54 PM   #1
vegasbrick
Board Member
 
vegasbrick's Avatar
 
Join Date: Jul 2009
Location: Las Vegas, NV
Default small clock repair

Does anyone know of a write-up on repairing the small clock? This would be the dash mounted one that hooks to the tech on the cluster. I searched maintenance & nonperformance threads and did not find anything about repair.

Thanks in advance.
__________________
Feedback Thread:
http://forums.turbobricks.com/showthread.php?t=208751

Volvos owned:


87 244 - Sold
86 245 - Sold
79 244 - Sold
83 242 - Sold
90 245 - Sold


vegasbrick is offline   Reply With Quote
Old 03-05-2010, 05:03 PM   #2
cleanflametrap
Board Member
 
cleanflametrap's Avatar
 
Join Date: Sep 2009
Location: near baltimore
Default

Don't saw the case like I did. Just peel the rolled rim carefully - the wrinkles will be hidden by the plastic bezel.

Get a couple radial lead 100 microfarad capacitors 16V or above (Radio Shack?)

Unsolder the old dried out caps and solder the new ones. It will run in the cold now!







I also tried to improve the lighting a bit: http://cleanflametrap.com/clock2.html

Even if you've never plugged in a soldering iron, this one's a shoe in.
cleanflametrap is offline   Reply With Quote
Old 03-05-2010, 05:10 PM   #3
vlvman
Board Member
 
vlvman's Avatar
 
Join Date: Mar 2009
Location: Jefferson City, MO
Default

Don't forget to pay attention to the polarity of the caps.
__________________
Robert
http://www.volvowiringdiagrams.com/
82 244DL, 2004 S60R AWD, 2008 S40 GF's
Had: 77 242 DL, 80 242 DL, 82 245 DL, 89 740 GL, 94 850T, 95 850 GL, and a 02 S60 2.4T
vlvman is offline   Reply With Quote
Old 03-05-2010, 08:28 PM   #4
vegasbrick
Board Member
 
vegasbrick's Avatar
 
Join Date: Jul 2009
Location: Las Vegas, NV
Default

Thanks guys. Nice site there cleanflametrap.
vegasbrick is offline   Reply With Quote
Old 03-05-2010, 11:44 PM   #5
dbarton
Dejected by Volvo Corp.
 
dbarton's Avatar
 
Join Date: Nov 2002
Location: North of Dallas
Default

That's a great repair write up. I have a couple dead clocks I'm gonna try this on.
Dave
__________________


'84 242ti, fourth owner, mine since 2003. Garaged since new. Old-school rounds because. B21FT, EMS: SDS EFI & IGN, TD04HL-15G turbo, T5Z trans with 0.73 OD, 3.91 diff, unmodified G80.
Volvo's Ambivalence of Volvo Enthusiast Community: prancingmoose.com/#novolvo
Dave's Volvo Page: davebarton.com
240 Mods and Fixes Pages: 240turbo.com/volvo240mods.html
dbarton is offline   Reply With Quote
Old 03-06-2010, 12:14 AM   #6
volvo245kit
Board Member
 
Join Date: May 2008
Default

FWIW, I repaired 5 dead clocks with caps that I got from a local electronics guy and the new caps didn't have any polarity markings on them. I asked the guy and he said that it didn't matter. So I went ahead and soldered them all in and put them back together and they all worked. Go figure.
volvo245kit is offline   Reply With Quote
Old 03-06-2010, 12:29 AM   #7
vlvman
Board Member
 
vlvman's Avatar
 
Join Date: Mar 2009
Location: Jefferson City, MO
Default

Non polarized caps, some are some aren't.
vlvman is offline   Reply With Quote
Old 03-06-2010, 12:36 AM   #8
Volvox_240
Board Member
 
Volvox_240's Avatar
 
Join Date: Nov 2009
Location: Fargo, ND
Default

My clock only keeps time when the car is on. Is this the case for all 240s, or is mine wearing out? I saw this thread and had to ask! Thanks for the info
Volvox_240 is offline   Reply With Quote
Old 03-06-2010, 03:39 AM   #9
dbarton
Dejected by Volvo Corp.
 
dbarton's Avatar
 
Join Date: Nov 2002
Location: North of Dallas
Default

Quote:
Originally Posted by Volvox_240 View Post
My clock only keeps time when the car is on. Is this the case for all 240s, or is mine wearing out? I saw this thread and had to ask! Thanks for the info
If you're clock is getting voltage when the key is off like it should, you might check your battery flat voltage... do this with car off after it has been sitting for 4 or 5 hours. A good battery at 100% should read about 12.6v. If it's 12.2v or lower, your battery is dying and it putting out less than 25% of normal capacity. Just a guess, but possibly that could shut off a voltage sensitive clock.
dbarton is offline   Reply With Quote
Old 06-06-2022, 11:03 PM   #10
the_hairy_baboon
Board Member
 
Join Date: Dec 2021
Default

Thread bump, just got my clock open (scraped with utility blade and pick until could get under the bezel and then small flatheads to lever it up. Unsoldered the ground connection from the copper {\phi} and got the circuit board and mechanicals out.

Questions:

1. Inside white matte paint is kinda thin. I could pull the bulb, mask off, and spray the inside with a brighter matter (I assume not glossy since that would be less even). Is there anything to look for in a spray paint to do this?
2. Would I gain benefit from also painting the backside of the front glass holding cone? Not worth the tape masking effort?
3. Anyone need any pictures of the insides or schematics? Can't see the main chip but can trace what all is connected to it.
4. Bulb replacement - current bulb is working, but it's been over a decade since cleanflametrap's LED experiment. I'm thinking there's more variety to be found that's potentially brighter too. Has anyone experimented with this?
the_hairy_baboon is offline   Reply With Quote
Old 06-07-2022, 07:35 AM   #11
dbarton
Dejected by Volvo Corp.
 
dbarton's Avatar
 
Join Date: Nov 2002
Location: North of Dallas
Default

I wrote an article about this here when I did this: https://www.240turbo.com/240gaugewiring.html#LED
and here: https://www.240turbo.com/240gaugewir...ml#clockrepair
Dave
dbarton is offline   Reply With Quote
Old 06-07-2022, 06:09 PM   #12
the_hairy_baboon
Board Member
 
Join Date: Dec 2021
Default

Quote:
Originally Posted by dbarton View Post
I wrote an article about this here when I did this: https://www.240turbo.com/240gaugewiring.html#LED
and here: https://www.240turbo.com/240gaugewir...ml#clockrepair
Dave
ah, excellent links. I think I browsed them months ago but forgot the details.

Any thoughts on the repainting of the insides? http://cleanflametrap.com/clock2.html mentions white matte finish for light dispersal, but nothing of redoing it.
the_hairy_baboon is offline   Reply With Quote
Old 06-15-2022, 10:34 PM   #13
the_hairy_baboon
Board Member
 
Join Date: Dec 2021
Default

Alright, excellent advice here.

1. Replaced the two 100uF capacitors (even after checking polarity accidentally put one in backwards, so had to switch orientation)
2. Got the yellow version of the LEDs in dbarton's link (https://www.amazon.com/dp/B0798Q4RRC), provides much better surround lighting without being blinding white like a white LED might be.

Any good suggestions for ways to roll the black bezel rim back on enough so it won't rattle? Just press it in a few spots so it won't move? I loathe electrical tape for it since it'll become sticky pretty fast.
the_hairy_baboon is offline   Reply With Quote
Old 06-16-2022, 11:57 AM   #14
philski o'flood
Board Member
 
philski o'flood's Avatar
 
Join Date: Nov 2005
Location: San Diego
Default

Quote:
Originally Posted by the_hairy_baboon View Post
Any good suggestions for ways to roll the black bezel rim back on enough so it won't rattle?
follow the 914 link from DBs site. The guy crimped the bezel back great. I use a wide short blade screw driver and keep pressing and rotating
philski o'flood is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 02:46 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.