• Please note that there are a few updates and clarifications made in the Audiokarma Rules, mostly relating to advertising and the addition of the new "Paying it Forward" & "Giving back" forums in the AudioKarma Audio Marketplace section.

HK 430 dial lamp

bamaboy

bamaboy

Active Member
I am cleaning up a HK 430 and the tuner dial lamp wires are not connected to anything. Can someone tell me where these wires need to be connected? The ends are circled in the pic below. I read lots of good info on the receiver, and cant wait to get it up and running. I replaced all the lamps and the face lights up beautifully. I gave about 50 bux for this beauty.

attachment.php
 

Attachments

  • hk 430 dial lamp.jpg
    hk 430 dial lamp.jpg
    73.4 KB · Views: 131
Register to hide this ad
mine

I have a 430 twin and the dial indicator leads are connecter to the two pins on the far right side of the lamp board (4551-7112). Right being "as you look at the face".
 
now its the meter!

I got the dial lamp fixed up, but now the meters dont move. They move when I have it on AM, but not on FM at all. I do not have an antenna hooked up, could this be the cause? I am assuming this meter is a signal strength meter.

attachment.php
 

Attachments

  • HK 430 meter.jpg
    HK 430 meter.jpg
    60.4 KB · Views: 104
Last edited:
The FM meter doesn't move when the antenna is not connect to my HK 230... noticed that last week.
Try hooking it up.

In my unit, the power button lamp is burned out. I'd like to replace it. It's rated at 6.5 volts, but I can't find out what the amperage rating is. Anyone care to guess ?
 
antenna

:lmao:

Yeah, hook an antenna up.

Depending on the signal stregth where you live for the station you are trying to pick up AND the condition of the tuner, the meter may not move without an antenna.
 
Its workin

I put all new lights in this beautiful receiver. Sound so good.

attachment.php


attachment.php


attachment.php


attachment.php
 

Attachments

  • harman:kardon 430 - 1.jpg
    harman:kardon 430 - 1.jpg
    64.1 KB · Views: 79
  • harman:kardon 430 - 2.jpg
    harman:kardon 430 - 2.jpg
    76.2 KB · Views: 79
  • harman:kardon 430 - 3.jpg
    harman:kardon 430 - 3.jpg
    80.8 KB · Views: 78
  • harman:kardon 430 - 5.jpg
    harman:kardon 430 - 5.jpg
    65.2 KB · Views: 77
clean

Dual power?

Hmmm, OK my rough understanding is that these (HK Dual Power units) have this as a design to provide "better" power to the system.

I think it has to do with actual power supply design theory, and not for cheaper smaller parts.

These is some info here http://sound.westhost.com/power-supplies.htm that seems to be right based on what (I think) I know.

Its technical so if that is too-much-info, think about it this way. A quality audio system is using AC from a source that is more-or-less pure. It needs to have DC voltage to power the components. It needs to convert the AC into DC and deal with all the variances that may or may not be in the AC line. Meanwhile there is all the natural electrical behavior and phenomena of what all the parts are doing and how well they do it. The actual music signal is AC but that is separate issue.

Stereo is two channels of music and two sets of parts making the music. Having two separate power sources (one for each) is viewed as a good thing for a lot of the resaons in the technical area.

I may be wrong.
Lets see if someone smarted shows up to explain it better or confirm my thoughts.
:lurk:
 
I could take a whack at this. All amplifiers pass some quantity of power supply noise to the output. Op-amp datasheets include a spec for it: power supply rejection ratio, or PSRR. Audio amp manufacturers aren't nearly so up-front on this issue, but it's nevertheless possible to improve amp performance by reducing power supply noise. Separate power supplies mean that noise induced into the power supply from one channel cannot leak into the other.
 
You must log in or register to reply here.
Back
Top Bottom