SKU: 13669300813

Sensor Transistor and Biasing Trimmer (Beogram 4002, 4004 and 4000)

Sale price$26.10 Regular price$29.00
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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

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Description

Sensor Transistor and Biasing Trimmer (Beogram 4002, 4004 and 4000)Beolover Sensor Arm LED Light Source for Beogram 4002 4 and 4000: Replaces the sensor transistor and biasing resistor in any Beogram 4000, 4002 and 4004. Many original transistors lost some of their gain, which may disable the record detection function. As a consequence the arm may drop on an empty platter. Ouch!!! Replacement ensures that the record detectionj functionality works properly. Replacing the original fixed value biasing resistor with a

Beolover Sensor Arm LED Light Source for Beogram 4002/4 and 4000:

  • Replaces the sensor transistor and biasing resistor in any Beogram 4000, 4002 and 4004.
  • Many original transistors lost some of their gain, which may disable the record detection function. As a consequence the arm may drop on an empty platter. Ouch!!! Replacement ensures that the record detectionj functionality works properly.
  • Replacing the original fixed value biasing resistor with a 5MOhm trimmer allows adjusting the bias to meet the gain spec given in the manual (4V at collector)
  • Direct drop in replacement. Replaces 1TR3/R26 in DC motor Beogram 4002 (Type 551x/552x), 1TR9/1R33 in AC motor Beograms (Type 550x) and 1TR14/1R33 in Beogram 4000 models.
  • Comes with alignment fixture to position LED board in correct location.
  • See this Beolover blog post for an introduction to the restoration of the sensor arm and record detection circuit.
  • Installation requires soldering/desoldering capability, and potentially requires an oscilloscope for trouble shooting. Some experience with electronics is helpful.
Follow us on the Beolover Blog for updates and info about our B&O restoration efforts.
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 13669300813

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    4.8 ★★★★★
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    Trish
    Cuba, US
    ★★★★★ 5
    Lifesaver teether
    Size: Small (Pack of 1), Product Packaging: Standard Packaging
    Such a great little toy for my teething puppy. He loves the texture!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 29, 2026
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    Kalley Porter
    Lowell, US
    ★★★★★ 5
    Tough, Fun, and Actually Lasts! ⭐⭐⭐⭐⭐
    Style: Black chew toys for dogs, Style: Black chew toys for dogs
    I’m seriously impressed with the PUPTILY dog toys for aggressive chewers! My dog usually destroys toys within minutes, but these have held up surprisingly well. They’re durable, entertaining, and keep my pup busy for a long time without falling apart. The material feels strong and high quality, and I love that the toys help satisfy my dog’s chewing instincts while also helping with boredom. My dog gets so excited every time I bring them out. Definitely one of the best chew toy purchases I’ve made, and I would absolutely recommend them to other dog owners with heavy chewers! Also, for some reason my dogs like the black one much better than the more expensive tan ones.
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    Reviewed in the United States on May 27, 2026
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    Christy Sharp
    West Palm Beach, US
    ★★★★★ 5
    Durable
    Style: Black chew toys for dogs
    My hound dog seems to like hers. She greets me at the door every day with it in her mouth and she hasn’t been able to tear it up or get any little pieces in her mouth when she nib nibs on the edges. It doesn’t have a smell. It is hard. It seems safe I guess since they can’t pick it up with their paws and pop each other over the head with it but if you have an intruder it would be great to have in hand.
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    Reviewed in the United States on May 20, 2026
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    DIGGER
    Battle Creek, US
    ★★★★★ 5
    Tough product
    Style: Black chew toys for dogs
    Received a timely manner and so far my puppy has no destroyed it yet, although he did his best to. Good product
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    Reviewed in the United States on April 12, 2026
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    Wolfpack Athletics
    Lowell, US
    ★★★★★ 5
    Surprisingly Tough Without Being Too Hard
    Style: Black chew toys for dogs
    The hardness on this bone is right in the sweet spot for aggressive chewers. It’s firm and durable enough that my dog hasn’t been able to tear chunks off or destroy it quickly, but it’s not rock-hard to the point where I’d worry about teeth damage. My dog usually goes through most toys pretty fast, and this one has held up really well. After extended chewing sessions, it only shows minor wear instead of deep cracks or breakage. It keeps his attention without splintering or becoming unsafe. If you’re looking for a bone that can handle strong jaws while still being safe for aggressive chewers, this one strikes a good balance and has been a solid option so far.
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    Reviewed in the United States on January 2, 2026

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