Jump to content


Photo

Radio lights dim


  • Please log in to reply
8 replies to this topic

#1 LH4ME

LH4ME

    Forum Participant

  • Members
  • PipPip
  • 29 posts
  • Location:Newcastle
  • Car:Lh
  • Joined: 16-December 18

Posted 14 April 2019 - 08:00 PM

Hi all.

I installed an original style radio into my lh today and all is good except the green backlight is so dim that it can hardly be seen even in the dark.
Also the red light(on) is also not very bright and is almost purple.

Is this just due to the age of the unit or could i have done something wrong?

Blue/red wire to ignition
Long grey wire to earth
2 short grey wires to speakers

Thanks


Sent from my iPhone using Tapatalk

#2 torana74

torana74

    Forum Participant

  • Members
  • PipPip
  • 35 posts
  • Location:sydney
  • Joined: 31-January 16

Posted 14 April 2019 - 09:04 PM

testing the memory  but i always thought the original ones were earthed via the  case/aerial   and  the long  grey wire to dash light circuit. Both the yellow(blue/red)  and grey connections  made at fuse  box terminals.

Accessory power. not ignition.   Though symptoms you are describing  sounds  like the radio  itself  isn't earthed.

 

Also if it's an air chief 11 or 13  transistor,  make sure you  have a 15ohm speaker connected when applying power  as without  it connected  there  is a chance of destroying  radio internals


Edited by torana74, 14 April 2019 - 09:06 PM.


#3 LH4ME

LH4ME

    Forum Participant

  • Members
  • PipPip
  • 29 posts
  • Location:Newcastle
  • Car:Lh
  • Joined: 16-December 18

Posted 14 April 2019 - 09:21 PM

Great, thanks for the reply and good info.

Its a Phillips LP40 which needs a 2 ohm speaker. I dont have the speaker connected yet because i dont have one of the required spec.

Ill re-wire as you described and see what happens.

Thanks again.

#4 torana74

torana74

    Forum Participant

  • Members
  • PipPip
  • 35 posts
  • Location:sydney
  • Joined: 31-January 16

Posted 14 April 2019 - 09:51 PM

LP40  is a 4ohm speaker  if  i recall.   No need to have connected  to  test lights.  If testing radio out of the car, put negative to case and  run  the blue/red  to (fused) power and see how the red  light goes  when  turning on.  Then  do same  for grey wire.

If the radio is fitted in car, make sure case  gets grounded..  usually the mounting tab at rear will do it it.  Relying  on the nuts at front and  rusted/painted bits might get  troublesome.

I'm assuming it's dash mounted?



#5 LH4ME

LH4ME

    Forum Participant

  • Members
  • PipPip
  • 29 posts
  • Location:Newcastle
  • Car:Lh
  • Joined: 16-December 18

Posted 14 April 2019 - 10:06 PM

Yeah its earthed through the tab at the back to under the dash.
Thanks again.
Couldnt find the wiring diagram for it on the forum.

#6 hanra

hanra

    Adam, I need your advice...

  • Members
  • PipPipPipPipPipPipPip
  • 8,919 posts
  • Name:Brad
  • Location:Farrrrrr North Qld
  • Car:1975 LH SL/R 5000, 1967 Morris Cooper S, E36 BMW, Toyota Corolla, Isuzu DMax
  • Joined: 24-March 11

Posted 15 April 2019 - 08:08 AM

Air Chief was original style for LH. Have you got an LX radio? 



#7 VDO

VDO

    Forum Member

  • Members
  • PipPipPip
  • 139 posts
  • Name:Chris Curtis
  • Location:Brisbane QLD
  • Joined: 17-September 14

Posted 15 April 2019 - 08:51 AM

Philips LP40

 

Twin grey wires: Speaker

Single grey wire: Dash lighting +

Blue/red wire: 12v+ accessories 



#8 LH4ME

LH4ME

    Forum Participant

  • Members
  • PipPip
  • 29 posts
  • Location:Newcastle
  • Car:Lh
  • Joined: 16-December 18

Posted 15 April 2019 - 09:10 PM

Air Chief was original style for LH. Have you got an LX radio?


Yeah its LH model but more like LX interior. Just the way i bought it.

Philips LP40

Twin grey wires: Speaker
Single grey wire: Dash lighting +
Blue/red wire: 12v+ accessories



Thanks VDO.

#9 LH4ME

LH4ME

    Forum Participant

  • Members
  • PipPip
  • 29 posts
  • Location:Newcastle
  • Car:Lh
  • Joined: 16-December 18

Posted 22 April 2019 - 07:13 PM

Just an update on this one. Wired it up as per the above instructions today and it worked and lit up like a charm.

Thanks everyone for your input.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users