KR-4070

[J A]

I'm in the process of refurbing a kr-4070. This is the first time I've done any sort of vintage audio refurbish at all but it was a good deal and I have a KD-5070 so I thought I'd just have a Kenwood setup for fun. Anyway, I'm ashamed to say I basically picked it up and before even taking any pictures just jumped right in so I don't have a ton to share unfortunately. I did, however, run into a little issue with one of the two lamps on the ends of the station indicator. It seems as though the one that would go on the right hand side is gone, along with the socket. Really there are 3 questions here:

1. In the parts list there's a fuse holder j13-0040-05; is this the lamp socket?

2. I'm sure replacement fuse bulbs aren't complicated to find/replace but what about the socket?

3. I understand these are wired in series so should be easy to wire up (I think) if I can find the socket, right?

Edit:. Added a couple of pictures as I know some of you guys enjoy that kind of thing. One is showing the bend in the corner (after I had already corrected some of it) then there's a "post bend correction photo". The others are just random pics. Still in the process of cleanup--when I picked this thing up it was absolutely covered maybe 1/4-1/2 inch on the boards with...I have no idea what, some combination of hair, lint, dust, spider webs and who knows what else.

 

[J A]

I think I've found something that may work. There are a lot of options but trying to find a fusebox open enough that it will allow light to emit properly from the bulb is my concern. At digi-key there is a part number 708-1892-ND that I thought would work but it might be too short (looks like the current mounting plate is 1.5" with the fuse lamp being (probably?) ~1 1/4". I also found a Mouser p/n 504-BK4-S-4004-1-R for super cheap, but shipping is twice the cost of the part. Any input on whether this Mouser part will work?

I'm contemplating just building one, these things look pretty simple. I guess the question is it as simple as it looks? 2 conductive pieces of metal that will both touch the incoming wire and the ends of the fuse lamp? If so, maybe I just cut a short piece of plastic, drill a hole in the center, and then mount conductive metal at each end. Anyone with more knowledge than me willing to give that a thumbs up or thumbs down?

Edit:
I think, actually this one didn't have a lamp on both sides, couple of pieces of evidence to that effect:

1. No spare wires, nothing floating around in here.
2. No evidence of damage and no parts clattering about--no indication one was ever there.
3. There's tape on the side of the FM bar that carries the light indicating maybe it was intended to block it off.

Anyway, despite the appearance of a spot for the lamp and indication in the other builds I've seen (and the schematic, etc) I'm doubtful it existed on this particular build.

 

[Musicnut1986]

Just curious how your refurb project is going. A KR-4070 was my first receiver and I'm kind of nostalgic about them.

 

[J A]

It went great, thanks. Really beautiful receiver. Here's a couple of pics. Luckily I didn't really have to do too much. Cleaned it up with some deoxit and CRC, changed a few caps and the bulbs and that's about it.

Most challenging part was really the bend in the bottom left corner of the face. But I managed to just bend it back into place very slowly and carefully. It's noticeable if you know it's there, otherwise you can't tell.

 

[Musicnut1986]

Looks very nice. Enjoy your new/old Kenwood.

 

[Watthour]

FYI, every 4070 I have (five of them) has fuse lamps on both ends of the dial scale. Moreover, they were originally wired in series.