What did you last repair?

Finally managed to get a vinyl wrap on the sba10 'fixing' them. I was always a fan of the old kef 105 which inspired the wood (plastic) colours. I'd been listening to them unfinished for approx 6 months.

They don't look perfect but if I saw them in a thrift store i would think they were 'vintage' rather than diy. The vinyl looks surprisingly good in person.

Next up is repairing my lxmini the cat smashed..
 

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This lasted about three years, dawn to dusk.
I have one that is running since 2012, encapsulated power supply in another housing behind the main one, which has a similar looking LED, 30 Watts, draws about 33 from mains.
Latest ones are SMD PCB, drivers, LEDs (many) on the same fairly large PCB.
They are rugged, and durable.
 
Well, our HP laptop started acting up again...the thing was damaged when someone, (who won't fess up)...the individual picked up the thing by lifting it away by the screen, the hinge on the left broke...of course near to a cooling exit vent & the power "ON" button. As the substructure got damaged, the cooling passages "changed course" and the fan started making noise, maybe from a bad sleeve shaft off the motor. So we had it "repaired" at a shop..they merely slopped some epoxy inside trying to get things lined up again. All was well for awhile, but the fan started making noises & recently a warning would come up as over-temps were showing. We added a fan table to get some more circulation...but frankly this fan-table couldn't blow out a candle...weak AF. Now the thing is going into temp shutdown. Never could get the plastic covers off the back...Found a spot on the back as likely an air "intake" some 50mm by 50mm horizontal slots, a perfect size for a little 12V microfan I had, but looking closely, behind the suitable slots, was a sheetmetal structure with tiny holes for airflow...the airflow with maybe 1/3 rd of the slots in surface area$%$%%.
As the plastic panel was perfectly flat, the little fan I have fit perfectly... Superglue sealed & bonded just right. Rigged up a switch off a 12V wallwart...then a simple three-sided wood riser for some space between this "fan-table" & the Laptop itself for the clearance of the outboard fan...Let's see in time if the ^&^%$# thing stays cool.





-------------------------------------------------------------------------------------------------------------------------Rick.........
 

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After sitting on the parts for nearly three years, I finally recapped my Adcom GCD-700 CD changer. It is about 20 years old and has slowly been showing more and more problems. I was not a job that I was looking forward to, but it turned out ok. I used solder braid to remove the old solder and all of the old caps (40 of them) were replaced with audio grade nichicon caps. After putting it back together, it wasn’t working properly. Took me a while to discover that the new cap by the spindle mechanism was interfering with the gear. Had to bend it out of the way as it was a bit larger than the original one. Now it runs and sounds great again! Maybe I’ll get another 20 years out of it.
 
Richard:
Find the service manual or a tear down video, and open the cover, change the fan near the CPU, some of them are like miniature blowers passing air by the CPU. Noisy fan needs lubrication, or replacement.
The plate for the vent may have small holes to prevent small bugs getting in. If you feel like, remove it.
Broken hinges are a common issue with laptops, and if needed, you can reinforce the area with fiberglass woven tape, used for motor insulation, a similar cotton tape is not suitable.
Some plastics do not bond well with epoxy, I found that cleaning the area with epoxy paint thinner, and adding epoxy paint thinner to 2 part epoxy (Araldite, standard grade), made it bond to a printer cover which would not stick with epoxy earlier. Only enough was added to make the epoxy a little more fluid, and it worked.
 
I designed a circuit and while waiting for pcb I wrote the software.
PCB arrived today and tried the software and found some bugs.
Was sending bit 7 first into a shift register instead of bit 0 so 7 segment display was backwards.
Its basically a model train controller but minimised to keep costs down.
One 7 segment display and four buttons (plus. minus, select and menu)
Its a bit cryptic to use due to minimal user interface.
So I blank out display between numbers so you know it was entered ok.
Once control function is done I rotate the display to confirm done OK.
100_0447.JPG
 
I have changed a 50W Led module, that had failed, on a 100W flood light.
Easy fix.
I was amazed to see a very good case making an excellent heat sink.
And amazed at the awful job they made to set the two Led modules on the heatsink. Terrible thermal contact surfaces and no thermal grease at all.
Well, I made a decent job at thermal binding for the one I changed. Few months later the module failed...or may be on the second 100W flood light we own...
New modules we have, but not in a hurry for replacement.
It is amazing how a seemingly good design can be ruined by crap assembling.
 
Back in post #2486 I had taken the 55 pound GE microwave off the wall, cracked it open and found a dead shorted magnetron tube. I ordered a replacement tube and the 5KV diode that feeds it. Unfortunately, Amazon lost the magnetron somewhere between Orlando and West Virginia. They overnighted me a second tube yesterday which arrived today. I popped the parts in place and fired it up. It appeared to operate fine but I heard something that didn't sound right, so I investigated further. With the lights off in the room I could see a small arc inside one of the terminals on the capacitor, so I shut it off and removed it. The push-on connector was pushed next to the appropriate pin on the cap, not onto it. This was misassembled from day one. The wire was the HV secondary on the transformer (about 2.5 KV). Did this arc cause the tube to die, or shorten its life?

All I need to do now is put the oven back together and get it back up on the wall over the stove.
 
Please, this is not a political post, we are now seeing these problems with increasing prosperity also here in India.
Wall Street made quarterly figures very important, so the pressure was on the management teams to give results, or be fired.
Nobody minds if German companies do not pay out dividends, and among the larger companies - I think BMW is one - the local state government also owns a stake. But they keep the companies cash rich, so investments are made.

In a dividend stripping situation, the companies are short of cash, no investment, no upgrades, so no long term planning.
And remember the unions, and the trouble they caused?

And here also, the youngsters are not willing to work on the shop floor.
And in cars, and many other fields, America was late on the technology.
I would buy a Toyota that worked, rather than a GM that was in recall too many times for my comfort.

Those are among the reasons that made American manufacturing a hollow shell of what it was earlier. Japan also is down the same path, so are their successors. It is simply where you stand on the evolutionary time line.

Enough on an audio forum, I hope you get the idea.
Here Sharp was recommended for microwaves, but service is poor, they don't seem to sell much.
I changed the the damaged Magnetron in my Daewoo microwave (sold under the local Kenstar brand, outsourced from Korea), to one from LG, had to adjust a couple of tabs, it works.
Cost $12 then, my labor was free, and later it failed again.
Corrosion on the flexible connectors, put sewing machine oil, and a few open close cycles, tightened a couple of crimp connectors. that was all.
Got it in 1998, they were a new product then in my country.
Good enough, I think, it did need a keyboard replacement some years ago, some connection had failed in the membrane keypad.
 
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And here also, the youngsters are not willing to work on the shop floor.
And in cars, and many other fields, America was late on the technology.
I would buy a Toyota that worked, rather than a GM that was in recall too many times for my comfort.

Those are among the reasons that made American manufacturing a hollow shell of what it was earlier. Japan also is down the same path, so are their successors. It is simply where you stand on the evolutionary time line.
And here, my vintage old 1963 RCA Victor console stereo (restored/modded of course) is still producing glorious rich music that fills the house.
However, when it was made, times were far different.
 
How true.....
Consider the events that set has been a silent witness to:
JFK
The Pill
The Beatles
Feminism
Oil Shock, and the push by Jimmy Carter to make cars more efficient.
Japanese Audio...and cameras
AIDS

There was a song called 'We Didn't Start the Fire', by Billy Joel I think, nice video, that showed the changing times and fashions of the era.

Oh well,enjoy the music.
 
And consumer electronics were soooo much more expensive then than now. Considering what they cost, it's a good thing they lasted!
Back then you bought something once. Now every two years. The price points reflect this. We have to keep all the shipping companies, retailers, and municipalities collecting local taxes in business too, right? That means selling, selling, selling, selling, selling.


And if you refuse to buy into it all, it makes you some sort of terrorist, right? (That idea actually came from a Calvin and Hobbs cartoon some 20 years ago).
 
Bill Watterson stopped writing the strip (Calvin and Hobbes) in 1995, very much to my regret.
I had somebody buy the books in the USA from Barnes & Noble, and bring them in his luggage to India, they were not available here at that time.
Still have them, they have a different point of view.