Harlee
Well-known
I have 2-3 MG-1s plus a couple of Yashicas, a GSN & GS. I really like the GSNS as well as the MG-1s and have been shooting Yashicas since the early 1970s while living in Sasebo, Japan. I've had pretty good luck in reburbishing them for personal use and to sell. As long as I've been shooting them and repairing them, I still have questions about some problems which occur. On one of my MG-1s, the meter works, but the yellow light comes on indicating it needs more light, but will not stay on as my other ones do. Could this be a rod adjustment problem or a POD problem? I don't think I've replaced the POD but have on a number of them but I'm not sure about this one and I'd hate to tear into it if I've already done it. I suppose I can remove the top and check it out. Any one have any ideas?
b1bmsgt
Yeah, I still use film...
Does the light come on solidly and then go out, or is it kind of flickery and hard to find the right spot as you press the shutter button? If flickery, then it is most likely dirty contacts. If solid and then goes out... 
Russ
Russ
Harlee
Well-known
Well, If I remember correctly, it comes on when more light is needed, and will stay on until I push the shutter button down a bit further. It seems to come on at the correct time as I turn the F Stop ring, but goes out when pushed further down. The shutter appears to be staying open correctly even though the yellow light goes out. I'll play with it a bit more and see if I can figure it out. Thanks for your input!
real_deal
Newbie
I'm having similar issues. I'm not sure if the batteries are wearing thin or there is an internal wiring issue. The light indicator will stay on briefly and then just flicker out to nothing at all.
b1bmsgt
Yeah, I still use film...
OK, that is perfectly normal, correct behavior. As you press the shutter button, a set of electrical brushes pass over a set of contacts. As it moves down, it makes the "under" circuit, and the light illuminates if you need more light. As you press further you leave the "under" contacts and hit the "over" set of contacts. If the "under" light was illuminated, it will go out as the "under" circuit is broken and the "over" circuit is made. The same will happen to the "over" circuit as you press to trip the shutter. Take a look at my POD explanation post link under my signature and you will see pictures of the brushes and contacts.
Russ