Tubelad SE new build

tbie · 24th May 2011, 01:43 AM

Hi everyone,

I am new to the forum, reached here recently while searching for alternative diodes for D2 and D3 on SE board. I have got the materials required and the diodes are on their way thanks to all the suggestions over here.

I started soldering the stuff and hit a wall. I can't find Mylar insulation film for D1 and U1. I am trying to find it locally in Canton, OH but not able to find it. Can someone suggest where to find this material.

rknize · 24th May 2011, 02:15 AM

Radio Shack still sells the old school mica insulator kits. It comes with all the hardware you need. Just add thermal grease. You can get TO220 thermal pads from Mouser and the other usual places. Those don't need grease, but you still need a nylon bushing to insulate the screw.

Sent from my MB860 using Tapatalk

Steven123 · 24th May 2011, 10:04 AM

You can buy them @ Digikey the partnumber is HS417-ND. It's a small kit that includes the washers, the screws and the mylar insulator.

tbie · 24th May 2011, 05:41 PM

Thanks guys, I will try Radioshack first. Online they do show TO-220 kits instore availability loacally. If I am not lucky there I will order from Digikey.

Vishnu

tbie · 28th May 2011, 04:21 PM

I got the the insulator not at radioshack but a local electronics repair shop and did finish populating the board. Now waiting for Edcor to ship transformers. Planning to solder wires for power connections and use a terminal strip to connect transformers. This will be done when I get back home after call. Edcor order placed on 5/5 hopefully they will ship soon.

tbie · 28th May 2011, 08:29 PM

Excuse me but few more questions, how to clean the flux before firing up the board. Next is would 1N4005 be ok to be coupled with R30 instead of 1N4007.

Thanks

nightanole · 28th May 2011, 08:48 PM

isopropyl alcohol aka rubbing alcohol. Get a shallow metal/glass pan and soak the thing in it for 30-60 minutes and then wipe the big chunks off with paint brushes while its soaking. If you can get the stuff to 60c it cleans 10x faster. Problem is heating alcohol safely. I use sonic cleaners with heaters built in, or incubators. Never use the stove or microwave

evanc · 28th May 2011, 10:16 PM

tbie,
I did not use the diode across r30 on my build. Many hours later and no problem. Evan

rknize · 30th May 2011, 01:38 AM

A 1N4005 should be OK. What is your B+?

tbie · 30th May 2011, 02:43 AM

rknize, Thanks for confirming. I planned this build with 300b tubes in mind. They are on their way. I haven't tested the build yet, I am waiting on edcor to ship transformers.

24th May 2011, 01:43 AM	#1
tbie diyAudio Member Join Date: May 2011 Location: Canton, OH	Tubelad SE new build Hi everyone, I am new to the forum, reached here recently while searching for alternative diodes for D2 and D3 on SE board. I have got the materials required and the diodes are on their way thanks to all the suggestions over here. I started soldering the stuff and hit a wall. I can't find Mylar insulation film for D1 and U1. I am trying to find it locally in Canton, OH but not able to find it. Can someone suggest where to find this material.

24th May 2011, 02:15 AM	#2
rknize diyAudio Member Join Date: Feb 2009 Location: Chicagoland	Radio Shack still sells the old school mica insulator kits. It comes with all the hardware you need. Just add thermal grease. You can get TO220 thermal pads from Mouser and the other usual places. Those don't need grease, but you still need a nylon bushing to insulate the screw. Sent from my MB860 using Tapatalk __________________ Russ http://www.knizefamily.net/russ/cate...ics/tubeaudio/

30th May 2011, 01:38 AM	#9
rknize diyAudio Member Join Date: Feb 2009 Location: Chicagoland	A 1N4005 should be OK. What is your B+? __________________ Russ http://www.knizefamily.net/russ/cate...ics/tubeaudio/

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24th May 2011, 10:04 AM	#3
Steven123 diyAudio Member Join Date: Mar 2011	You can buy them @ Digikey the partnumber is HS417-ND. It's a small kit that includes the washers, the screws and the mylar insulator.

24th May 2011, 05:41 PM	#4
tbie diyAudio Member Join Date: May 2011 Location: Canton, OH	Thanks guys, I will try Radioshack first. Online they do show TO-220 kits instore availability loacally. If I am not lucky there I will order from Digikey. Vishnu

28th May 2011, 08:29 PM	#6
tbie diyAudio Member Join Date: May 2011 Location: Canton, OH	Excuse me but few more questions, how to clean the flux before firing up the board. Next is would 1N4005 be ok to be coupled with R30 instead of 1N4007. Thanks

28th May 2011, 08:48 PM	#7
nightanole diyAudio Member Join Date: Feb 2009	isopropyl alcohol aka rubbing alcohol. Get a shallow metal/glass pan and soak the thing in it for 30-60 minutes and then wipe the big chunks off with paint brushes while its soaking. If you can get the stuff to 60c it cleans 10x faster. Problem is heating alcohol safely. I use sonic cleaners with heaters built in, or incubators. Never use the stove or microwave

28th May 2011, 10:16 PM	#8
evanc diyAudio Member Join Date: Sep 2009 Location: New Jersey. About 1 hour from NYC and 1 min. from the beach	tbie, I did not use the diode across r30 on my build. Many hours later and no problem. Evan

30th May 2011, 02:43 AM	#10
tbie diyAudio Member Join Date: May 2011 Location: Canton, OH	rknize, Thanks for confirming. I planned this build with 300b tubes in mind. They are on their way. I haven't tested the build yet, I am waiting on edcor to ship transformers.

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