Ross Statham Posted November 24, 2022 Report Share Posted November 24, 2022 Sorry if this one has been answered before, but does anyone in the brain trust know where the fuse is for the brow lights for a 1978 20J? I was replacing one of the bulbs and apparently shorted things out. Breaker is intact but circuit is dark. According to the schematic, there is also a fuse in the circuit. I have been unable to locate it so far, and if any of you smart folks know where it is, I’d be most appreciative. I took the glareshield off so that I could better deal with the bulbs, and it is definitely not there. Nor can I see it close to the pot either. ideas? Quote Link to comment Share on other sites More sharing options...
Marauder Posted November 24, 2022 Report Share Posted November 24, 2022 Sorry if this one has been answered before, but does anyone in the brain trust know where the fuse is for the brow lights for a 1978 20J? I was replacing one of the bulbs and apparently shorted things out. Breaker is intact but circuit is dark. According to the schematic, there is also a fuse in the circuit. I have been unable to locate it so far, and if any of you smart folks know where it is, I’d be most appreciative. I took the glareshield off so that I could better deal with the bulbs, and it is definitely not there. Nor can I see it close to the pot either. ideas?I don’t know if the fuse location changed on the 78 models from where they were on the 77 Js. They went from a quadrant to vernier control and may have moved it. They were located directly under the radio stack on a metal plate.Sent from my iPhone using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
Ross Statham Posted November 24, 2022 Author Report Share Posted November 24, 2022 Aaaaaaahhhhh ! Thanks will try in the am. Ross Quote Link to comment Share on other sites More sharing options...
PT20J Posted November 24, 2022 Report Share Posted November 24, 2022 Try looking behind the panel beneath the dimmer knobs. Quote Link to comment Share on other sites More sharing options...
Ross Statham Posted November 25, 2022 Author Report Share Posted November 25, 2022 Thanks! I’ll be at the hangar first thing in the am!!….Ross Quote Link to comment Share on other sites More sharing options...
Marauder Posted November 25, 2022 Report Share Posted November 25, 2022 Aaaaaaahhhhh ! Thanks will try in the am. RossAnd be sitting down when you see the price for those fuses (if you can find them). Sent from my iPad using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
Aerodon Posted November 25, 2022 Report Share Posted November 25, 2022 I have a complete dimmer unit with fuses if it turns out to be more than the fuse. Aerodon Quote Link to comment Share on other sites More sharing options...
Ross Statham Posted November 25, 2022 Author Report Share Posted November 25, 2022 Thanks guys! I priced those fuses yesterday. No kidding. This morning my buddy and I are on the hunt. He’s a retired electronics genius and pilot, spent a career as a troubleshooter. I forwarded this thread last night. Ross 1 Quote Link to comment Share on other sites More sharing options...
DonMuncy Posted November 25, 2022 Report Share Posted November 25, 2022 There are (or at least were) cheaper sources for those fuses. If need be, I can look to see if I can find my notes. 1 Quote Link to comment Share on other sites More sharing options...
Marauder Posted November 25, 2022 Report Share Posted November 25, 2022 There are (or at least were) cheaper sources for those fuses. If need be, I can look to see if I can find my notes.Please do! None of the usual sources (Mouser, etc.) seem to be carrying them. Sent from my iPhone using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
Ross Statham Posted November 25, 2022 Author Report Share Posted November 25, 2022 Found the blown fuse, after looking three days. They’d been moved. Once we found the transistors they were protecting, fuses were mounted upside down close by. Ordered a fuse and a spare from Newark Electronics, who had a decent price. $20 each plus shipping. Thanks again everyone! Ross 3 Quote Link to comment Share on other sites More sharing options...
Ross Statham Posted January 25, 2023 Author Report Share Posted January 25, 2023 Got a message asking for details about the replacement fuse. Here are the details: Ordered from https://www.newark.com, SKU 19K5343. They show it as an Eaton Electronics manufacturer part number GMW-5. I paid $20.02 plus shipping. Hope this helps, y'all!.....Ross 2 2 Quote Link to comment Share on other sites More sharing options...
0TreeLemur Posted January 26, 2023 Report Share Posted January 26, 2023 14 hours ago, Ross Statham said: Got a message asking for details about the replacement fuse. Here are the details: Ordered from https://www.newark.com, SKU 19K5343. They show it as an Eaton Electronics manufacturer part number GMW-5. I paid $20.02 plus shipping. Hope this helps, y'all!.....Ross Thanks for doing the leg work! Glad they are still available. Quote Link to comment Share on other sites More sharing options...
katzhome Posted January 31, 2023 Report Share Posted January 31, 2023 I was able to order some from Newark. They currently have 81 in stock. I now have my eyebrow lights operational! https://www.newark.com/eaton-bussmann-series/gmw-5/fuse-5a-125v-fast-acting/dp/19K5343 Regards, R.Katz Quote Link to comment Share on other sites More sharing options...
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