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RE: Heathkit AJ-15 dial illumination

47.14.98.170

JonM

In Reply to: RE: Heathkit AJ-15 dial illumination posted by Chef Henry on November 17, 2024 at 09:14:20

The schematic (link below) shows the dial lamps being connected to the green transformer secondary, so you'll need to measure its voltage and get something appropriate. (The schematic doesn't say what they are, and I haven't found a parts list on line.)

When you need to replace that Stereo indicator lamp, the schematic says says it's a "#756 frosted". (Scroll all the way down - it's at the very bottom of the schematic.) It looks like a substitute is available here:

https://safetybulbs.com/product/756-wide-angle-led-lamp/

Good luck!
AJ-15 Schematic (Open in New Window)

Follow Ups:

RE: Heathkit AJ-15 dial illumination - JonM 03:40:17 11/18/24 (3)
You can also order the paper manual from someone who now owns the Heathkit name. The AJ-15 manual looks like it's $25. See link below. (No affiliation - I've never done business with them.)
- Heathit manuals (Open in New Window)
- RE: Heathkit AJ-15 dial illumination - Chef Henry 07:47:43 11/18/24 (2)
  Thanks, Jon!
  - RE: Heathkit AJ-15 dial illumination - JonM 08:37:25 11/22/24 (0)
    Here's something to look at...
    
    (I have no affiliation, just found it on a simple search.)
    - AJ-15 Replacement Bulbs (eBay) (Open in New Window)
  - RE: Heathkit AJ-15 dial illumination - JonM 13:57:30 11/18/24 (0)
    You're welcome. It occurred to me later that if you can find the parts list to the receiver version of that tuner (the AR-15), it probably uses the same dial lamps. (I've looked briefly, no luck so far.)
    
    I'm thinking the assembly manual would be useful in keeping your tuner working. You can do updates like replacing old capacitors and then be able to do realignments and such. The Heathkits were designed to be easy to work on - you might keep that one running a long time... (If you can't tell, I got my start building Heathkits :-)
    
    Good luck!

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