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Ah yes, sorry Max, you mentioned both arrows some posts back. I mentioned calibration of the PG506 since when calibrating the 7A16A you also try to compensate for pulse shape of the PG506. Albert

I have a number of plastic toy rail cars from the 40's (American Flyer, I believe) that were my fathers, and have a similar problem.? Either the plasticizer or mold release has resulted in white

Those tool handles are another issue. I have a plastic fitted case for a set of Xcelite nut drivers. They have quite an odor. I have to leave the case open unless I'm traveling away from the workshop.

Now you have me worried- I have a number of foam-lined trays of PET/CBM-era ICs that I haven't looked at in years.? Fortunately, they are in very dry storage.? One of my "special" chips (a 40 column

I think polyethylene foam instead of the black polyurethane foam does not have the “get goopy and stick to everything” problem. Has anyone had polyethylene foam degrade like the black stuff? I

A few years ago, I found a very nice set of lab glassware in a fitted case at an estate sale.? When I got home, half the foam had disintegrated into dust from just driving around, and the rest did

I think batteries are able to spit out chemicals from their seals as they age. I have this Radio Shack Model 100 portable computer that has extensive (almost not repairable) corrosion near the battery

On Sun, Mar 21, 2021 at 11:06 AM, Bert Haskins wrote: Yep they used something like this in drive belts also. Yes my TEAC X-3 just had a "belt melt", it is hard ti understand why they can't be made in

Steve, If you get the KSP10BU transistors, these have a pinout of BEC. They are not the common EBC or ECB pinout. I suspect all of your 0402 transistors are leaky from what you already checked.

Plastics in general aren't eternal. I have two P6032 probes that are melting and the smell is nauseating. I have to open them up and air them out as soon as I can crack a window open here.

Renée wrote on 3/21/2021 1:17 PM: <snip> Hello-- Thank you for the heads-up regarding Duracell's discard service [sic]. I've noticed that battery holders for, say, AA cells that feature coil-spring

Maybe I'll try pre-baking the next one also. I've read claims that it's unnecessary for hand soldering, but...

Thx for the replies, tho, believe it or not, I *can* read and follow a datasheet, usually... ;-} Looks like a good board... Admittedly, I'm not using a great layout...it's built on a little

This is well known in the gun community, people buy those nice hard shell plastic gun cases with the foam inside and leave their guns in there for years, and corrosion always results. They found out

I don't have this equipment but here is my feedback in addition to Mark's suggestions: Are +17V, "+17V (DCPL 1)", -17V, "-17V (DCPL 1)" on sheet <1> stable when cold (not working)? In the happy

Dan and Mark, Thanks for the tips. I had the covers off a few times and removed the -5 V board. Never noticed the socket pins allowing perpendicular mounting. Measured the transistors and Q213

Hello Martin, The main voltage reference used in the PS5004 is a National Semiconductor LM399. These references are thermally stabilized, and after about 6 months of aging through normal use, have a

Hi Albert, to check my PG506 I used 3S1/3T77A pair, connected with a 20 cm GR874 airline. Measured a risetime of 750 ps and aberrations as per service manual. So I did prefer touch nothing. :-) R436

unfortunately I too have had the same experience. foam-lost a bunch of microprocessors and assorted items that I thought were in safe place.... and regarding Duracell---lost a couple pieces of test