sci.electronics.repair@googlegroups.com

Google Groups

"Newgene McMensa" <newgene.mcmensaREMOVE@gREMOVEmail.com>: Jun 06 09:38AM -0700 <pfjw@aol.com> wrote in message news:04609b6f-2165-463d-863b-db86bea0c5a2@googlegroups.com... > I am looking for a clean copy of the original assembly manual for a Scott LK150. The unit I have was assembled with Kynar wire, I would like a do-over. Thanks in advance.   > Peter Wieck > Melrose Park, PA   Don't feed the troll.

"Newgene McMensa" <newgene.mcmensaREMOVE@gREMOVEmail.com>: Jun 06 09:38AM -0700 <pfjw@aol.com> wrote in message news:aeaf94e4-5dcb-429f-b4b3-1887ce7ee640@googlegroups.com... > The Troll is back, please do not feed the troll.   Sorry, it's a serious question, Peter. Most folks here have been great help to me.

bitrex <bitrex@de.lete.earthlink.net>: Jun 05 05:25PM -0400 On 06/02/2017 06:50 PM, bitrex wrote:   > In hopes of a quick fix I replaced the cathode bypass capacitor C38 and > coupling capacitor C77, but no change in the symptoms. Tried several > different sets of tubes and also no change. Suggestions?   Alright gents, I carefully inspected the PCB and noticed the solder joints on the header where the tube board plugs in to the solid state section looked a bit cruddy. After a good scrubdown with acetone and re-flowing the joints all the waveforms look good and we're back in business.

bitrex <bitrex@de.lete.earthlink.net>: Jun 05 05:27PM -0400 On 06/04/2017 05:58 PM, Phil Allison wrote:     > So not faulty components, a PCB issue.   > Cleaning the area with a good PCB solvent is a sensible first step.   > .... Phil   Fixed, cause was crudded up/flaky solder joints on the interconnect cable header coming from the tube board to the solid state section.

Phil Allison <pallison49@gmail.com>: Jun 06 01:24AM -0700 bitrex wrote:   ----------------       > Fixed, cause was crudded up/flaky solder joints on the interconnect > cable header coming from the tube board to the solid state section.   ** I guess that is the nearest thing to "thanks" I'm gonna get ....     ..... Phil

bitrex <bitrex@de.lete.earthlink.net>: Jun 06 12:19PM -0400 On 06/06/2017 04:24 AM, Phil Allison wrote:   > ** I guess that is the nearest thing to "thanks" I'm gonna get ....   > ..... Phil   You're right, that was insensitive of me. Thank you, Phil - if I ever have a chance to visit that part of the world I'll know where to take my stuff.   Accents sound kinda funny, though. We all talk like this here:   <https://www.youtube.com/watch?v=bgfDALzpfJU>   Probably sounds wicked retahded to anyone else.

N_Cook <diverse@tcp.co.uk>: Jun 06 01:41PM +0100 I cracked the white outer ceramic block and instead of wire/strip around a ceramic core, what looked exactly like a 2W metal oxide resistor, complete with brown,black,silver bands . Does wrapping a 2W resistor in fire-cement and preform ceramic hollow block, make it 5W?

Rheilly Phoull <rheilly@bigslong.com>: Jun 06 08:44PM +0800 On 6/6/17 8:41 PM, N_Cook wrote: > complete with brown,black,silver bands . > Does wrapping a 2W resistor in fire-cement and preform ceramic hollow > block, make it 5W?   Sounds more like our overseas friends creative component marketing.

ohger1s@gmail.com: Jun 06 08:00AM -0700 On Tuesday, June 6, 2017 at 8:41:15 AM UTC-4, N_Cook wrote:   > Does wrapping a 2W resistor in fire-cement and preform ceramic hollow > block, make it 5W?   They're not rated in amps, but watts. Soooooooooo..... If you can sink off enough heat you can raise the wattage rating of a resistor. What I don't know is whether you can get a two watt resistor to safely dissipate 5W with the package you describe.   Sony used a lot of 0.1 ohm ceramic encased resistors as fuses, but these were encased for fire retardence and eliminated the loud pop/snap a regular 0.1 resistor made when the mosfets after them shorted.   If there's another one like it in the circuit you can experiment.

N_Cook <diverse@tcp.co.uk>: Jun 06 04:13PM +0100 > They're not rated in amps, but watts. Soooooooooo..... If you can sink off enough heat you can raise the wattage rating of a resistor. What I don't know is whether you can get a two watt resistor to safely dissipate 5W with the package you describe.   > Sony used a lot of 0.1 ohm ceramic encased resistors as fuses, but these were encased for fire retardence and eliminated the loud pop/snap a regular 0.1 resistor made when the mosfets after them shorted.   > If there's another one like it in the circuit you can experiment.   Its in the speaker return path as a protector , annoyingly its not o/c but PbF tinpest? build up around its wire was causing the o/c. In a Crate Flexwave 120/212 of 2008, with (tick) N222 "compliance" mark = PbF ? the solder does not react as PbF when admixing with SnPb . I cracked the casing using too sharp and edge screwdriver , to force the issue, to prove solder joint failure, levering against the pcb. Same ohm+zigzag logo as the other apparent 5W 0.47R emitter resistors

"Ron D." <ron.dozier@gmail.com>: Jun 05 09:17PM -0700 Annoying isn't it. I have the Juice 70 and the Auto/Air one used on a Toshiba and a Compaq.   I actually think the iGo took out the Toshiba with poor connections. Now I;m not using them. Me thinks cables are bad in both Auto/Air, but the Juice may still work.   This http://www.siig.com/media/files/manuals/0014/04-1022a.pdf may help you, but it's not iGo.   If you search hard, you should be able to find reverse engineering info.   There are different mating levels on the iGo plugs.   If you look hard on the net you'll find some reverse engineering stuff.

"Ron D." <ron.dozier@gmail.com>: Jun 06 08:12AM -0700 I was an early adopter of the Juice (grey) and the auto/air adapter (black) where they came with nearly all of the tips. I primarily used Compaq and Toshiba tips.   If, I can find the tips, I could tabulate values.   What I THOUGHT about doing was:   1. Find a connector to use at the adapter.   2. Take a DE-9 or 15 connector with removeable pins and fill it with epoxy. Epoxy two Neobium magnets in the connector to make an ersatz magnetic connector. Then find two pogo pins to make the connections.   3.The resistor values would be in the long cable but in the shell.

epcastueras@gmail.com: Jun 05 09:42PM -0700 Sp 40w dc280-340v diagram

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.