The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-19-2003, 11:03 PM   #1
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
am/fm radio

I have what I believe is a van am/fm radio. It looks very similar to our truck radios. My question is where do I get this thing serviced/repaired. Hopefully in the pacific northwest and hopefully cheap. I've tried hooking a speaker, power etc but can't get a sound. It has the same three plugs as our truck radios, but I dont know which one is what. Are there any professionals out there? i don't want to spend too much on a van radio. thanks
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-20-2003, 08:47 AM   #2
JimKshortstep4x4
Senior Member
 
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
Talking

I am not familiar with the Van radios, but on the 71-72's the power wire plugs in and the two speaker wires piggy back on top of the the power wire plug.

I have to believe that your radio is similiar, that two of the terminals are for the speaker and the other is for the power.

I can look at a radio tonight to see what end the power wire is on
or you might be able to discern which is which by using an ohm meter. One wire from the speaker should be ground to the case, and the other speaker wire will be output from the radio. To check the power lead connect you ohm meter to the radio light and turn the radio on. The power wire can then be read. If you know the power wire than the other two are speaker wires and if it does not play with the hookup, then the radio is bad.

I don't know of any repair shops in your area.

Jim
JimKshortstep4x4 is offline   Reply With Quote
Old 02-20-2003, 09:06 AM   #3
72c10
Registered User
 
72c10's Avatar
 
Join Date: Dec 2002
Location: burlington KY
Posts: 175
Im pretty sure that when I took my truck apart the power was the one on the drivers side of the radio and the other side hade the speaker. I would call around to some vcr ar electronics repair places to see what they say. Mine was an AM and wasnt working so I took it apart and found a wire broke, cleaned it up and resolders the wike and it actualy worked.
Good luck
72c10 is offline   Reply With Quote
Old 02-20-2003, 10:20 AM   #4
oldiron
Designated Grumpy Old Man
 
oldiron's Avatar
 
Join Date: Oct 2001
Location: arlington, washington usa
Posts: 3,094
Try Johns old car radio repair in Zillah WA 509-829-3918. He is usually at the swapmeets here in Washington. Try the Monroe swapmeet in May.
oldiron is offline   Reply With Quote
Old 02-20-2003, 09:32 PM   #5
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
Thanks for all the replies. Here is a picture of the plug. The radio is right side up.
Attached Images
 
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-21-2003, 09:37 PM   #6
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
anyone know which plug is what?
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-22-2003, 08:01 AM   #7
72c10
Registered User
 
72c10's Avatar
 
Join Date: Dec 2002
Location: burlington KY
Posts: 175
the one closest to the center of the radio and that is farther apart than the other two is the power
72c10 is offline   Reply With Quote
Old 02-22-2003, 08:03 AM   #8
JimKshortstep4x4
Senior Member
 
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
Talking

Looking at the back of my radio with the plug on the right as you look at it, the power is on the right, speaker positive is in the middle, and speaker ground is on the left. You may want to get the speaker wire and plug for it before you test it.

To test the radio, hook the speaker wires up, (two), hook power up, ground the case and with an attenna the radio should play.

If it does not play, then there is a problem. The rheostats on the old radios can cause a problem and spraying with contact cleaner while working the volume knob will usually clear it up. Other than that, you will need a radio repair person.

Good luck!

Jim

Last edited by JimKshortstep4x4; 02-22-2003 at 08:06 AM.
JimKshortstep4x4 is offline   Reply With Quote
Old 02-22-2003, 08:27 AM   #9
72c10
Registered User
 
72c10's Avatar
 
Join Date: Dec 2002
Location: burlington KY
Posts: 175
JimKshortstep4x4 you are right I gues I should make sure ive got my info right before i pass it along. im going to try and atach a photo of mine that I just doug out of the garage
Attached Images
 
72c10 is offline   Reply With Quote
Old 02-22-2003, 08:31 AM   #10
72c10
Registered User
 
72c10's Avatar
 
Join Date: Dec 2002
Location: burlington KY
Posts: 175
of course it is clearly marked so i should have eather kept my mouth shut or dug it out befor I posted. Dan72cst I hope I didnt mess you up any.
Attached Images
 
72c10 is offline   Reply With Quote
Old 02-22-2003, 08:34 AM   #11
72c10
Registered User
 
72c10's Avatar
 
Join Date: Dec 2002
Location: burlington KY
Posts: 175
Attached Images
 
72c10 is offline   Reply With Quote
Old 02-22-2003, 09:13 AM   #12
JimKshortstep4x4
Senior Member
 
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
Hey guys, I am starting to feel real bad about this! I am getting a little confused. When I looked at my 71 am/fm in the truck, (I am upsidedown while doing this) the wiring appeared to be the same as the am radio, but it is actually reversed after looking at the pic of the radio that is posted. I am posting a picture of the plug and if you plug it into the radio as pictured the power will be on the left as you look at it.

On my picture, power is red, speaker + is green, and speaker ground is black.

I am sorry for the confusion! I am going to the junkyard for some therapy!

Jim
Attached Images
 
JimKshortstep4x4 is offline   Reply With Quote
Old 02-22-2003, 10:45 PM   #13
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
Thanks everyone...I guess I'll give it another try before I bring it in. Still unclear as to who fixes these things. I'll give "Johns old car radio repair" at the Monroe swap meet a try, but definately don't want a "restoration" Just want to fix whats wrong as it is a van radio.
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-22-2003, 10:46 PM   #14
72c10
Registered User
 
72c10's Avatar
 
Join Date: Dec 2002
Location: burlington KY
Posts: 175
did you open her up yet see if everything lookes alright?
72c10 is offline   Reply With Quote
Old 02-22-2003, 11:01 PM   #15
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
yeah, I did before, but I'm no electrician. Nothing look burnt or broken. Guess I'll pull it off the shelf and give it another try. Thanks
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-22-2003, 11:30 PM   #16
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
Ok....loking at my picture above. The plug on the right is grounded to the case. So hooked (-) speaker to that & hooked (+) speaker to the center and power to the one on the left. I turn it on and I get a hummm out of the speaker. There is no static just hummm doesn't change with volume control, just same hummmm. ???? Any suggestions?
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-26-2003, 10:11 AM   #17
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
ttt
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-26-2003, 10:28 AM   #18
JimKshortstep4x4
Senior Member
 
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
Talking

Antenna?

Jim
JimKshortstep4x4 is offline   Reply With Quote
Old 02-26-2003, 03:26 PM   #19
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
Antenna??

I don't have an antenna to plug into it, so I just stuck a piece of wire in there, don't know if it really made a connection or not.
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400
Dan72cst is offline   Reply With Quote
Old 02-26-2003, 05:08 PM   #20
wnc mountain
More hobbies than money!
 
wnc mountain's Avatar
 
Join Date: Jan 2002
Location: Raleigh, nc, usa
Posts: 655
try some electronics cleaner, spray it around on the inside of the radio. like jim said spray the internal workings of the volume knob while turning it back and forth.

You may also be able to tell while you have it appart which plug is power.
__________________
'70 cst10/swb 350, 3 on the tree, factory buckets.
'70 GMC lwb 350/350 ps,pb
'72 c-10 lwb 350/350 a/c, ps, pb
'72 Blazer project
wnc mountain is offline   Reply With Quote
Old 03-17-2003, 03:20 AM   #21
Dan72cst
Registered User
 
Dan72cst's Avatar
 
Join Date: Feb 2001
Location: Lake Stevens,WA 98258 North of Seattle
Posts: 833
I sprayed electronic cleaner all over this thing....the am/fm switch had some dark copper on it, but the rest of the circuits looked pretty good. I let it dry and tested it and still just a hummm out of the speaker????

Any help would be greatly appreciated!!!
__________________
Marysville, WA (Dan72cst@hotmail.com)
72 4wd Blazer CST 350/350
72 4wd Chevy LWB 350/350
68 2wd Chevy LWB 327/400

Last edited by Dan72cst; 03-17-2003 at 03:35 AM.
Dan72cst is offline   Reply With Quote
Old 03-18-2003, 12:13 AM   #22
chevy2racr
So Many Ideas, So Little Money
 
chevy2racr's Avatar
 
Join Date: Sep 2001
Location: Marshalltown, IA
Posts: 1,610
someone remind me, script writtng is on which one?
__________________
72 Blazer 3/4 ton running gear 4.10s NP205/TH350 350 4in lift half doors
71 C10 with 454
99 S-10 5.1L SBC 700R4
09 Malibu

Marshalltown, Iowa
chevy2racr is offline   Reply With Quote
Old 03-18-2003, 11:24 PM   #23
chevy2racr
So Many Ideas, So Little Money
 
chevy2racr's Avatar
 
Join Date: Sep 2001
Location: Marshalltown, IA
Posts: 1,610
ttt
__________________
72 Blazer 3/4 ton running gear 4.10s NP205/TH350 350 4in lift half doors
71 C10 with 454
99 S-10 5.1L SBC 700R4
09 Malibu

Marshalltown, Iowa
chevy2racr is offline   Reply With Quote
Reply

Bookmarks


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 Off

Forum Jump


All times are GMT -4. The time now is 12:27 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com