WTB: Two heat sinks from WG K6100/V2000

Sprout

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Getting a Tempest back on it's feet, and the 6100 deflection board I picked up had two of the four heat sinks missing. I've got a spare V2000 board I can pull them from worst-case, but I'd prefer not to strip anything off that board if I can help it.

Anybody have any "parts" V2000 boards laying around they wouldn't mind pulling a couple of these heat sinks from, or simply have a couple of spares they don't need?
 

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Best of luck. I need a bunch of them as well, and the only way I've found is to steal them from another board.

I do suspect there are alternates available that could be adapted to work, which may require drilling small holes in the board for screws, like the G05-802's have. Those original ones really aren't the best mechanical design anyway, and the 802 ones are much better.

I'm convinced Digikey or similar must have ones that could work, I just haven't taken the time to comb through and find one yet though.
 
Did some digging - found some on DigiKey that appear to be likely matches for the G05 version, but that does no good here of course...

Originals made by "Staver" - "Thermovane" part. Appears they still exist as "Columbia-Staver", and "Thermovane" is still listed as a specific product category on their website as well.

No luck finding a product catalog on their site, or even finding a reseller that specifically calls out their products. May be worth emailing them directly to see if the part used was generic, or something custom-made for these deflection boards on behalf of WG...

I expect I'll just move a couple over unless I can dig up a more beat-up V2000 deflection board than the one I've got (which is in good shape otherwise, but needs minor repairs).
 
Can you post the Digikey part number?

I believe you could make them fit a 6100. All you need to do is drill two holes for the screws in the appropriate spot, if space allows.

I actually found one of the sinks that had the Staver Thermovane logo stamped in it (as most don't seem to, I think this was the first one I'd seen like that, or maybe just the first one I noticed, see below), and it led me to the same site. They don't appear to list anything like them, from what I could find.

Note if you use the ZTX transistors that Bill recommends (which is what I have been using for years), you might be able to get away without the sinks (and just use the sinks that come with them), as they don't get nearly as hot. I have been bolting the ZTX sinks to the finned ones on the board, but I've been meaning to try building up a board without the original sinks, and seeing if it would work. Parts here:


http://www.biltronix.com/transistor_subs_01.html#transistor_subs_mpsu07_mpsu57




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Thanks for the link - good info there!

I did note that for the ZTX parts, he says "This part works but is not as durable as original part due to lower power capacity." - have you noticed any issues?

I didn't make note of any part numbers for the GO5-style heat sinks - just observed that the images shown on Digi's site looked very, very similar to those. Would need to measure up the ones on the G05, and then see what matches up I suspect. I was scrolling through a few hundred images/part numbers at the time. I'll see if I can find some candidates.

If those are also hard to come by, worth the effort to try and nail down an appropriate replacement.

I did eyeball the 6100 board, and think you could get away with drilling holes, although I didn't do any measurements yet.
 
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Thanks for the link - good info there!

I did note that for the ZTX parts, he says "This part works but is not as durable as original part due to lower power capacity." - have you noticed any issues?



No, no issues. I've used them on 100+ boards, and never seen one fail or had one come back.

I do use Bill's recommended sinks with them, and I also use a tiny amount of thermal grease (applied with a toothpick), when I slip them into the wraparound sinks, which I drill a small hole in, and bolt to the existing sink on the board using the original screws. Takes a little more work, but they are super cheap, and have worked well.

I haven't done any formal temperature measurements, but I've noticed they don't seem to get as hot, just from a finger test. So I've wondered if you could run them just with the wraparound sinks, and forego the original sinks on the deflection board (which would also solve cases where they're missing).

Also FYI, if you do use the ZTX parts, they get installed 'backwards' from the originals (i.e., with the beveled side facing the opposite way). No crossing of legs, just flip the whole part around.
 
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