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Tag Archives: capacitor replacement
Bose 901 Series II Active Equalizer #67402 Repair
This equalizer got a full overhaul with new 1% precision resistors, electrolytic capacitors, audiophile-grade output capacitors, transistors, gold-plated RCA jacks, 4% silver solder for all connections, a thorough switch cleaning, and computerized frequency response testing and a listening burn-in to verify proper operation. It sounds just fantastic with a very dynamic and life-like presence that really draws you into the experience of the source material, just like the Bose 901 should.
1936 FADA 270T Vintage Table Radio Repair
This FADA 270T radio which came through the shop lately was a beautiful, very high end radio back in 1936. It has a huge airplane dial with dual-speed tuning and a magic eye indicator, and a beautifully organized under-chassis layout. Repair was pretty straightforward with a few surprises at the very end, but nothing that couldn’t be fixed. Click through to read more – there’s dozens of detailed, colorful photos of antique resistors and the magic tuning eye.
1937 Westinghouse WR 226 Vintage Radio Repair
This 1937 Westinghouse radio was the second highest in their tabletop line-up for ’37 and featured 7 tubes and a large, eye-catching dial for easy tuning. After a full overhaul including capacitors, resistors, an eye tube socket rebuild, new power cord, dial cord re-string, line input addition, and a full alignment it sounds great and pulls in stations across the dial. This model had the alignment trimmers all on the underside which was annoying, but peaked up nicely nonetheless. Read more for photos of the rebuild!
1969 GE Model C2504B Transistor Clock-Radio Repair
This iconic late ’60s GE clock radio came to the shop with loud, low humming when turned on and no radio reception. That’s a familiar problem! Time for new capacitors. This particular used a 100 uF main filter and several 200-400 uF secondary filter capacitors around the boards, along with three electrolytic coupling capacitors in the signal chain. They were very tired and as shown by the hum had started to short out; if the radio continued to be run with the loud hum it could have been badly damaged so it came in just in time. Some new components later, she’s good as new and sounds surprisingly good for such a small radio. There’s a mystery switch inside, too – do you know what it might control? Read more for more photos of the repair.
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Bose 901 Series II Active Equalizer #103549
This Bose® 901 Series II Active Equalizer is a part of Rain City Audio’s parts stock and got a full rebuild with upgraded parts and complete and comprehensive testing. All transistors, resistors, film and electrolytic capacitors were replaced, a new neon bulb added, and the controls cleaned and lubricated. This very detailed repair walkthrough has photos showing the drifted carbon composition resistors which can throw off the equalizer’s curve even if all the capacitors have been replaced. Click through for many more photos!
Posted in Audio, Bose, Electronics, Hi-Fi, Stereo, Vintage
Tagged Bose, Bose 901, Bose Active Equalizer, Bose Equalizer, capacitor replacement, repair, repair photos, series II, vintage
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Now for Sale: Westinghouse H-126 Little Jewel “Refrigerator” Capacitor Replacement Kits
Rain City Audio is proud to announce a new product offering: capacitor repair kits for the Westinghouse H-126 Little Jewel / “Refrigerator” Antique Radio!
This repair kit contains the most commonly needed parts to refurbish your Westinghouse H-126 Little Jewel / Refrigerator radio. You’ll receive 13 modern, high quality replacement film and electrolytic capacitors to bring your radio up to full performance. Take the guesswork out of fixing your own collectible model of Little Jewel, and save the hassle of using a parts site like Digi-Key, and order a kitted set of parts that’s ready to replace.
Included in this kit:
1 x 0.001 uF (You’ll receive 0.001 uF)
1 x 0.2 uF (You’ll receive 0.22 uF)
2 x 0.04 uF (You’ll receive 0.047 uF)
1 x 0.005 uF (You’ll receive 0.0047 uF)
1 x 0.025 uF (You’ll receive 0.022 uF)
2 x 0.01 uF (You’ll receive 0.01 uF)
1 x 0.1 uF (You’ll receive 0.1 uF)
1 x 0.1 uF Continue reading
Posted in DIY
Tagged capacitor, capacitor replacement, Fridge, H-126, Kit, Little Jewel, Westinghouse
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1958 Zenith Royal 500 Portable Transistor Radio Repair
This 1958 Zenith Royal 500, an early 8-transistor portable AM radio, came into my shop for a complete overhaul. I replaced several badly out of spec capacitors, added some insulation to correct a short circuit in two of the batteries and gave it an alignment. This is a perfect radio to take to the beach or the park while listening to a ball game, just like they’d have done back then. Many tear-down photos inside!
Bose 901 Series II Active Equalizer #114743 Repair
This Bose 901 Series II Active Equalizer got a full overhaul in the shop with all new capacitors, resistors, transistors and silicon diodes. After a thorough control cleaning, it sounds absolutely fantastic once again and should last for a long time to come.
Posted in Audio, Bose, Hi-Fi, Stereo, Vintage
Tagged Bose, Bose 901, Bose Active Equalizer, Bose Equalizer, bose equalizer repair, bose repair, capacitor, capacitor replacement, repair, vintage
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1962 Coronet 6 Transistor Shirt-Pocket Radio TRN-6
This rare early shirt-pocket transistor radio, the Coronet TRN-6, needed a few new capacitors to sound its best. It delivers surprising performance from such a small package! Plenty of tear-down photos in this article.
Posted in Radio, Radios and Tubes, Vintage
Tagged 6 transistor radio, capacitor, capacitor replacement, Coronet, coronet 6 transistor radio, coronet transistor radio, coronet trn-6, photos, portable transistor radio, repair photos, seattle vintage radio repair, shirt-pocket radio, transistor radio, transistor radio repair, trn-6, vintage
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1936 Zenith 5-S-29 Electrical Restoration and Alignment
This 1936 Zenith 5-S-29 was in the shop for a complete overhaul with all new resistors and capacitors, a new dial lamp socket, tube testing and alignment. After all that service, it looks and sounds fantastic and is going to last for a long time to come in a local collection.
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