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Showing content with the highest reputation on 08/03/2023 in all areas
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Had a routine check up with new Dr. A1C = 6.3, blood pressure and cholesterol both in target range. Looks like you people may have to put up with me for a bit longer.8 points
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I can lend you my flamethrower suitable for eliminating hornets' nests, mothers-in-law, politicians, undesirable visitors... and HD4 points
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I went to see a Branson show called the million dollar quartet last night. Great show! Most people have forgotten who Carl Perkins was. His music influenced many artists of the 60 's.3 points
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I'll see if one can fit in an envelope. I hope Mary isn't going to visit Dave Loggins.1 point
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Soak in bucket of Muriatic acid. Muriatic acid can be sourced at any local swimming pool store. When done pour the acid on your wasp nest...no wait, the wasp problem is the other guy's issue. /\ /\ /\1 point
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(insert serenity GIF here -- the one where Mal tries to come up with a retort, and fails, a look of mild exasperation crossing his face)1 point
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Georgia Satellites Georgia Satellites 1986 https://album.link/i/298088771 Example: More nostalgia than great. But I still like a few of the tunes a lot. And to come out right in the middle of the 80's was impressive.1 point
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^ That reminds me of this incident from 5 years ago.1 point
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Wool - Hugh Howey. Fun book. They adapted the first half of this one in to the TV show "Silo". I do enjoy the story archetypes where they drop you in a world with lots of strange stuff where things start happening and you have to keep reading to figure out what the heck is going on.1 point
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I have not used diesel but have heard the same thing. I also have not used brake or carburator cleaner, but have read many times that they kill wasp nests effectively. What I have used many times effectively is the foaming wasp spray, especially with the long range sprayer. Always do it after dark when they are in the nest and less likely to attack you. If they are all in the open like you pic above, then it should be straightforward. Buena suerte!1 point
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Watched off and on for the past week the Milan World Fencing championships. HK team co-coached by our friend, took silver. Of note two of the four in the team competition attended a BBQ at our house with both coaches a few years back after training with Lance and his club prior to a Cup competition out here. International incidents were avoided as no rattlesnakes or coyotes dared to make an appearance.1 point
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I'll stick to my 007's. They are quite happy with the Carbon making them sing. HS1 point
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That's impressive... shame they sound like shit. Something new for me, I came across my first ever arc'ed over SR-007 driver yesterday. Utter carnage in there, a hole in the diaphragm roughly 30mm across and burn marks on both stators. Other driver was just fine but yeah, there is a reason we fit protection circuits.1 point
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well all the el34s survived, right hand channel input 6922 is bad. Time to go to bed and cry.0 points
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RIP MY T2 ever had a day when everything goes wrong and you wished you had not got out of bed.... well I just wrecked my T2. Don't have the energy or will power to even troubleshoot it... what happened. I was slowly over time getting a DC offset on both channels, I would correct with the trim pot until I ran out of travel. My first thought was the valves were getting old. Yesterday I decided to open up on the amp case and check the virtual batteries and voltages.... Well the -560V rail was -600V... I spent most of yesterday looking for shorts, diode checking the transistors and doing the usual troube shooting. Since the psu was basically working but not regulating the -560V I also looked a live voltages... To cut a long story short I discovered partly by logic and partly by accident that even maxing out the trim pot only gave me -9.6V on the 20K resistor on the voltage set string. The voltage reference was correctly outputting 10V. I checked the trimmer and it would change in resistance over its travel. So my conclusion was with the two 540K resistors had drifted up in value and therefore reducing the voltage across the 20K resistor or else something was stealing voltage from the 20K resistor... today I did more testing and desoldered one end of each of the 540K resistors and measured them... 580K and 700K... I remembered that I had replaced all the voltage set resistors with TE 0.1% 1/4W a while ago... I checked the spec sheet and they are rated at 250V.. too little for the job and I think this is what caused them to drift high. My guess is the 700K resistor started to drift high, got more voltage drop across it which naturally increased the drift. I replaced them with Xicon 1/2W 1% 350V and for the -560V rail immediately started regulating again. job done back to listening right.... RIGHT....???? After some testing I connected the psu back to the T2 and the led on both channels close to the -260V terminal did no light. But with no load the -260V rail was rock solid. Connected to a T2 the rail only provided +75V on top of the -560V rail rather than the +300V it was designed to give. I guessed the 2N3904 in the -260V rail had spontaneously decided to fail in the current limiter and so decided to replace it. The 2N3904 I desoldered measured on a peak dca75 as shorted so I was sure I had found the fixed the problem.... again testing without a load everything seemed fine. So back to listening now... right... well... Then I did something really stupid. I thought the psu was off and connected the high voltage cable from the psu to the amp (the low voltage cable with the heater supplies was not connected) there was immediately sparking noises and I quickly turned off the psu. I tested the psu without load - all rails seemed good. I connected the psu to the T2 and powered it up. All the voltage rails where at the correct levels on the T2 But I had massive ballance issues between the + and - halves effecting both channels. All 4 virtual batteries now only read about 550V, (all the leds light so that's something)... SH*T SH*T SH*T DAMN DAMN I guess next step is to test all the valves, take the amp apart and hope the 2SK216 and 2sj79 are ok. I have one complete set of spare 2SK216 and 2sj79 and do have a spare set of amp pcbs so I am debating if it might be simpler just to build a new set of amp boards rather than try to troubleshoot and salvage what I have. today I simply should not have got out of bed.0 points
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