- Meyer Sound 833 problem - 2 Updates
- Soldering gun tip - 1 Update
- Soldering gun tip - 2 Updates
| legg <legg@nospam.magma.ca>: Sep 27 09:09AM -0400 On Mon, 26 Sep 2022 06:03:06 +1000, Trevor Wilson >even schematics. >TIA >Trevor Wilson You can start by trying to locate the source w/r to different gain settings in the signal chain. So how can you make it worse, first. Then you can concentrate on smaller sections of the circuitry, without the schematic. You seem to be happy running without that specific channel - complainibg about feed-through only - so just killing the section may be enough of a fix to satisfy your customer, if you can't cure the actual local fault. RL |
| "ohg...@gmail.com" <ohger1s@gmail.com>: Sep 27 06:52AM -0700 On Sunday, September 25, 2022 at 4:03:07 PM UTC-4, Trevor Wilson wrote: > -- > This email has been checked for viruses by Avast antivirus software. > www.avast.com Will they supply parts? Even buying the complete guts can't cost as much as their charge plus freight. I think I know the answer to that. In Connecticut U.S., we had a law years ago that required any company that sold electronics in our state to supply schematics to a licensed repair facility and free of charge as well (I guess to cut off any attempt to sell schematics for $500 each). When I informed a company (can't recall which one) that they had to supply me a schematic by state law, they essentially told me to pound sand. We definitely need "right to repair" laws with teeth in them. |
| Charlie+ <charlie@xxx.net>: Sep 27 07:54AM +0100 On Mon, 26 Sep 2022 12:43:51 -0400, Bob Engelhardt >ones, but I thought that it was that copper dissolves in the solder. >The tip about plating with silver solder was brilliant. I refined my >tip like that. And I got a big blob which I filed to the shape I wanted. snip Also I forgot to mention, if you need much more rigidity than the copper gives you - you can up the gauge a bit and use brass wire (silver solder tip now more essential), check Watts to see you got it about right! C+ |
| Bob Engelhardt <BobEngelhardt@comcast.net>: Sep 26 12:43PM -0400 Thanks for the replies! I know a copper tip doesn't last as long as the iron(?) plated Weller ones, but I thought that it was that copper dissolves in the solder. The tip about plating with silver solder was brilliant. I refined my tip like that. And I got a big blob which I filed to the shape I wanted. I have a temperature controlled iron & just use the gun when I want a lot of heat on a crude joint. E.g., unsoldering an AC cord. Installing the tip through the sides of the gun's arms actually doubles the area of contact between the tip & the nut. |
| Jeff Liebermann <jeffl@cruzio.com>: Sep 26 11:42AM -0700 On Mon, 26 Sep 2022 12:43:51 -0400, Bob Engelhardt >Thanks for the replies! >I know a copper tip doesn't last as long as the iron(?) plated Weller >ones, Yep. Iron plating on copper: <https://www.dillonsupply.com/Product/weller-8125n> "Weller® 8125N Soldering Tip With Hex Nut, For Use With 8200 Universal Soldering Gun, Solid Copper, Iron Plated" Some interesting details on how iron is plated onto copper: <https://www.finishing.com/379/18.shtml> >but I thought that it was that copper dissolves in the solder. Correct. >lot of heat on a crude joint. E.g., unsoldering an AC cord. >Installing the tip through the sides of the gun's arms actually doubles >the area of contact between the tip & the nut. Measure the voltage drop? Fire up a soldering gun and measure the AC voltage drop between the transformer secondary (threaded rods) and the base of the tip. I would measure it for you except I don't own a soldering gun or a thermal imaging camera. I also couldn't find any info or photos online. I'm looking for a good excuse to buy an IR camera, but this isn't it. -- Jeff Liebermann jeffl@cruzio.com PO Box 272 http://www.LearnByDestroying.com Ben Lomond CA 95005-0272 Skype: JeffLiebermann AE6KS 831-336-2558 |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 5 updates in 3 topics"
Post a Comment