Yes I have the 808 Alex and agree. However except for TO-3 5V regulators, the tip hole is too large. I had to find/order a smaller size tip. The larger hole tip tended to lift the pads off the board. I got mine locally here at Fry’s Electronics. Perhaps yours has the smaller diameter hole tip. BTW where do you get the filter pads. Hate to have to order them directly from Hakko. John From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of J. Alexander Jacocks As far as removing resistor packs, and sockets, and headers, and any other multi-pin packages go, I swear by a Hakko 808 desoldering tool. It does a fantastic job of heating and removing solder from through-hole applications. There's a new model, the Hakko FR-300, but I'd probably just use that as an opportunity to get an 808 for a discount price. - Alex On Thu, Oct 23, 2014 at 1:09 PM, John Monahan <mon...@vitasoft.org> wrote: Two more things… I always check resistor packs for resistance on each pin before using them. They are quite difficult to remove from a board cleanly. Also it’s easy to mix up the resistors in series and parallel in these resistor packs. Second once bad chips get into your stockpile they are very difficult to remove. Keep them out in the first place John From: Thomas Owen [mailto:thomasbr...@gmail.com] I appreciate all the suggestions as this was a lesson learned the hard way. I was not so surprised about the 74LSxx chips that did not work correctly, but when I saw this inline resistor pack (an entire bag of them) that physically looked fine, but electrically did nothing, that was the last straw! I agree with this order or some variation of it (personally I like to go to Digikey before Jameco because I can build nice parts lists there and re-use them, but it did take several projects to learn the ins and outs of Digikey). I would add to the list Quest Components which is also in CA. I ordered several UPD7220, BT478, and WD37C65 chips from them and they were excellently packaged with desiccant and everything. They also have a lot of the support chips for the 286 and 386 boards, including some faster variants that John mentioned looking for in his writeups..... Guys do yourselves a favor get stuff like this from Jameco. The price difference on things like this are trivial particularly when you count shipping. Life is too short, the time you spend on these things is just not worth the savings. FWIW, I always use in this order:- Jameco, Mouser, Anchor Electronics, & Unicorn Electronics. If not available in US, then UTSource. John From: n8ve...@googlegroups.com [mailto:n8ve...@googlegroups.com] On Behalf Of Thomas Owen Well John gets the award....
That was obviously affecting these signals -- -- |