| Electronics > Repair |
| When doing repairs, do you upgrade the broken parts |
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| nukie:
From your personal experience. When doing repairs to electronic devices/equipment replacing parts such as capacitors, transistors opamps. You want the repair to last. Do you replace them with quality parts or just cheap generic parts? I often go extra miles regardless whether it is a job or my own equipment. For capacitors I would look for better temperature and longer life, 1% resistors, brand name transistors and diodes. I often wonder if this a mental disorder or is it really worth it? What is the outcome if I have used cheaper parts, anyway the broken device is built with cheap parts. Are you tempted to 'upgrade' parts which are likely to fail. It's common to find consumer electronics filled with junk parts these days. |
| vk6zgo:
--- Quote from: nukie on April 04, 2012, 03:08:18 am ---From your personal experience. When doing repairs to electronic devices/equipment replacing parts such as capacitors, transistors opamps. You want the repair to last. Do you replace them with quality parts or just cheap generic parts? I often go extra miles regardless whether it is a job or my own equipment. For capacitors I would look for better temperature and longer life, 1% resistors, brand name transistors and diodes. I often wonder if this a mental disorder or is it really worth it? What is the outcome if I have used cheaper parts, anyway the broken device is built with cheap parts. Are you tempted to 'upgrade' parts which are likely to fail. It's common to find consumer electronics filled with junk parts these days. --- End quote --- 1% resistors are pretty much as waste of time,unless the original manufacturer specifies them for some reason. If the device is older,some of the newer components have higher specs,so,(if they aren't fakes!)they are worthwhile using. I would definitely use higher spec Electrolytics,as many of the OEM ones are crap! I have also made a habit of replacing very low capacitance Electros with Monolithic Ceramics. There is a lot of nonsense spoken about "The Engineer used it for a reason!". Most of the time 1uF & 0.47 uF Electros are used,because they are there,& cheap! Quite often,manufacturers( & not always "one Hung Low"),"sail close to the wind" with resistor wattages,use tiny tracks in power circuits,& other dodgy practices. If other companies produce very similar equipment using better spec'd components,it makes sense to upgrade "El Cruddo's" parts to that level. |
| sonicj:
i usually stick in whatever i have "in stock" or dig for a suitable replacement in my junk box. if i have to order a part, i spend a few cents extra on something decent. -sj |
| ampdoctor:
if it's older equipment, then usually any part you replace will be of better quality than what came out with very few exceptions. My entire stock is pretty much all 1% metal film resistors, np0 ceramics and mica, and poly caps. But if I'm stuck ordering a part that's not stocked, I usually upgrade as long as the cost isn't prohibitive. If it's things like caps or resistors, we're usually only talking about a few cents difference so why not go the extra mile. |
| david77:
I usually stick in whatever I've got in stock if it's reasonable to do so. If I need to order some part in I usually choose one with the same or higher specs. I'm not too fussy about it, though. As long as it works it's fine. Just in the last week I had to replace an unobtanium opamp in a DMM's RMS converter, the replacement part does work but I had to tweak a few resistors to get it to specs. Took me a couple of hours to get it right, basically guessing what to change. |
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