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  1. KilgoreCemetery

    B&O Beogram 1900 bad motor?

    Thanks for the input, nepow. That's about where I started, though, and I was still never able to get any spin from the motor. There is a voltage selector, but I'm pretty sure it's set correctly for my area. I think I'm just going to try to part out this player. It's not something I would...
  2. KilgoreCemetery

    B&O Beogram 1900 bad motor?

    Are there any general AC induction motor tests that I could perform to make sure that the motor itself is working properly? Is there a common fault to check when they go bad? Do they really ever go bad?
  3. KilgoreCemetery

    B&O Beogram 1900 bad motor?

    Ok, I've thought over the wiring schematic thing a few times now, and this is what I've come up with: Which corresponds to the numbers on here: And this picture makes it easier to tell what wires connect through the motor: Again, Black -> Blue = 327.4 Ohms Red -> Yellow = 331.6 Ohms...
  4. KilgoreCemetery

    B&O Beogram 1900 bad motor?

    Hey, thanks for the replies! I don't have time at the moment to draw up a wiring schematic, @kellys_eye, but I'll look into it on Sunday evening. @duke37 I don't think reverse is an option, but I'm guessing the motor is supposed to be able to do two different speeds. I don't remember if it has...
  5. KilgoreCemetery

    Motherboard LA-7871 Avell Laptop

    Any idea what happened to the mobo in the first place? Have you been replacing mosfets with identical parts?
  6. KilgoreCemetery

    Motherboard LA-7871 Avell Laptop

    Just to cover our bases, are you using a known good processor and RAM stick? It looks like the board is stuck in protection mode. Do you have a schematic for it? Does this mean you already fixed something on it? What did you fix?
  7. KilgoreCemetery

    Fire Smoke Damage

    I've had good luck with Febreze
  8. KilgoreCemetery

    Bypassing a charging port

    For a second there, I was confused about headlights and rechargeable batteries, but I think I have it now. First of all, you should know that I'm a rookie when it comes to this stuff, however, I do wonder if the charging port does more than just recharge the batteries. If this takes something...
  9. KilgoreCemetery

    B&O Beogram 1900 bad motor?

    I recently picked up this turntable for cheap, but the motor won't spin. I opened it up and realized that someone had already been playing with the wiring a bit, and after looking at the wiring diagram, I wasn't sure it was even connected right. The wire colors don't match what it says on the...
  10. KilgoreCemetery

    Kenwood KR-865G Burnt Resistor

    That's some awesome info! Thanks, FuZZ1L0G1C!
  11. KilgoreCemetery

    Need schematic for Realistic 31-2020A graphic equalizer

    It's on the download list over at HiFiEngine https://www.hifiengine.com/manual_library/realistic/stereo-frequency-equalizer.shtml
  12. KilgoreCemetery

    Kenwood KR-865G Burnt Resistor

    FuZZ1L0G1C: Woops! You're right, it's not wire wound at all. I didn't know that the body color indicated type. Is there a complete list available somewhere? I'll be searching for that soon. Unfortunately, I haven't found a free copy of the schematic, but I'm considering buying one. 73's de Edd...
  13. KilgoreCemetery

    Kenwood KR-865G Burnt Resistor

    I have a wire-wound resistor that is burnt beyond recognition and I'm hoping to find somebody that either has this exact model or has a service manual for this model so that I can figure out what value it's supposed to be. Unfortunately, It doesn't have a matching pair and the third band is just...
  14. KilgoreCemetery

    Testing Oddball MOSFETs

    I did do a test run with some of the "normal" IRFP9420's before you pointed that out, kellys_eye, but I went back and rechecked the source voltage as well as the transistors themselves. The initial idea was to just replace all the output transistors at that point, but now I'm just trying to...
  15. KilgoreCemetery

    Testing Oddball MOSFETs

    So, just to clarify, the original J162 came out of a Sherwood AM-7040 Receiver with a burnt out channel and I'm trying to find a compatible replacement (the one I'm testing now showed good with my multimeter). The other two are the same model number, but purchased off of ebay because I couldn't...
  16. KilgoreCemetery

    Testing Oddball MOSFETs

    This is the tester: https://www.amazon.com/gp/product/B071Y5CHPK/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 Those MOSFETs are all the same part numbers, J162. The first one is from series 8L1 and the other two are from series 7J3. The first two have been in circuit, but the third one has not...
  17. KilgoreCemetery

    Testing Oddball MOSFETs

    Original: First Replacement: Second Replacement:
  18. KilgoreCemetery

    Testing Oddball MOSFETs

    Ok. I now have a component tester like you mentioned, but I'm still wondering if I'm reading it right or if the replacement MOSFETs I've received are just fakes, or maybe they have a different internal design. Anyway.. I've tested one of the original J162's, the first replacement, and a...
  19. KilgoreCemetery

    MN1455LF IC Info?

    Thanks, Kelly. I ran across the 1455B info at one point too, but wasn't sure if it would be close enough. I noticed the 1455 has 42 pins, while the 1455LF only has 40 and I'm trying to verify whether it's working properly The 8255 is interesting though. I do remember reading something about...
  20. KilgoreCemetery

    MN1455LF IC Info?

    I'm looking for any information I can find for an MN1455LF 40 pin IC. It's from a Marantz SR-8100 DC Receiver and I know that it probably has an internal clock of some kind, but otherwise, I can't find any info. The service manual is too big to upload, but I've included part of the schematic...
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