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  1. KilgoreCemetery

    How do you test a 3-Legged Diode (Rectifier)?

    So, I ran across these diodes in a Kicker KX3004 amplifier. They're labeled D12 and D13 on the circuit board, otherwise I would've had them pegged as transistors. Anyways, how can I tell if they're any good? Does the AKA/KAK indicate how they operate, similar to transistor labeling? Any...
  2. KilgoreCemetery

    Help identify a resistor without bands

    I was referencing this post when I realized that your reply included a link to a page that goes into more detail about resistor Letter and Digit Codes. Very helpful! I almost confused a 3WR27ΩK as 27 kilo ohm, instead of 27 ohm with ±10%
  3. KilgoreCemetery

    Do you still need thermal paste when using a silicone elastomer?

    Ah, good to know. I think a couple of the replacement parts had a plastic back. I'll have to double check. Thanks!
  4. KilgoreCemetery

    Do you still need thermal paste when using a silicone elastomer?

    Thanks, Kelly! You know, you answer so many of my questions... Do you offer classes or anything? lol
  5. KilgoreCemetery

    Do you still need thermal paste when using a silicone elastomer?

    I'm not sure if I'm asking in quite the right forum, but I recently ordered this thermal pad: https://www.digikey.com/products/en?keywords=1168-1209-nd. My question is, do I still need to use thermal paste? If it helps, I plan on using it behind the MOSFETs of a car amplifier.
  6. KilgoreCemetery

    Singing Machine Power Port Replacement

    Yes sir! I haven't installed it yet, but it does fit the charger. Found it on Digikey. Part: CP-018PJ-ND (Edit) Although, it was brought to my attention that the spacing for the pin on the side does not line up quite right with the circuit board for this model. I would recommend verifying...
  7. KilgoreCemetery

    Need help Rockford fosgate 1500bd amp

    So, with my recent Rockford Fosgate plight, I thought I'd practice my google-fu a bit on this one as well. Unfortunately, I don't really have the brains to tell apples from androids when it comes to the intricacies of transistors.. Anyways, I was hoping someone could verify/disprove whether...
  8. KilgoreCemetery

    Finding a replacement MOSFET

    Also, since I'm replacing the original with something different, does that mean I should replace all of the P-Channel fets to keep everything balanced?
  9. KilgoreCemetery

    Finding a replacement MOSFET

    Awesome! I saw that one, but wasn't sure. Not sure why the original burnt out other than possibly age. Now that it's removed I should be able to power everything up and check voltages, right?
  10. KilgoreCemetery

    Finding a replacement MOSFET

    I'm trying to fix a Sherwood AM-7040 Stereo Power Amplifier and found that one of the MOSFETs were shorted. It has J162 8L1 printed on it and the schematic says it's a 2SJ162. I believe Digikey has more info about it here...
  11. KilgoreCemetery

    Singing Machine Power Port Replacement

    Thanks! Evidently, I typed the wrong words into digikey and mouser earlier, but now I think I'm on the right track!
  12. KilgoreCemetery

    Singing Machine Power Port Replacement

    I'm trying fix a Singing Machine SML385BTBK. The female power port on the back was pushed in and broken off and I was wondering if anybody knew how to identify it and where I can find a replacement one? Measuring the female side is a bit tricky, but the male end of the AC power adapter (Model...
  13. KilgoreCemetery

    Distorted Channel on a Rockford Fosgate Amplifier

    OH, MAN! Turned out I somehow managed to skip an easy check and go on to all the tedious ones. The problem ended up being the large 0.1 ohm resistor at the top right corner of the picture. I must've checked one twice and that one not at all when I was checking the MOSFETs. Thanks for all your...
  14. KilgoreCemetery

    Distorted Channel on a Rockford Fosgate Amplifier

    Ah, that's quite possible. I don't have a scope, but I do have a tool that I made that's able to probe a point and output the signal to a small amp/speaker combo. I watched a video that showed me how to set it up so it won't destroy things. Hopefully that will get me where I need to go
  15. KilgoreCemetery

    Distorted Channel on a Rockford Fosgate Amplifier

    Update: Rockford Fosgate customer service trolled me a bit. I requested a schematic and they responding, saying that one was enclosed, but it wasn't. Tried chatting with another rep and he said the schematic for my model hasn't been released yet. In other news, I'm doing this Gargamel style...
  16. KilgoreCemetery

    Distorted Channel on a Rockford Fosgate Amplifier

    I swapped them, but there's no change. While I'm poking around in here I'm wondering how can I tell if the variances I find indicate the actual problem, or just symptoms of the problem? Is there a way to know or do I just have to start swapping out components until I find the right one?
  17. KilgoreCemetery

    Distorted Channel on a Rockford Fosgate Amplifier

    Alright. I'll try swapping them with some known working ones and report back!
  18. KilgoreCemetery

    Distorted Channel on a Rockford Fosgate Amplifier

    I recently picked up a Rockford Fosgate T8004 amplifier. I was told it didn't work and, after a little investigation under the hood as it were, I realized that a few of the MOSFETs and a couple resistors were bad. After replacing them, I powered up the amp and was happy to find that both of the...
  19. KilgoreCemetery

    Help identify a resistor without bands

    Thanks for the help guys!
  20. KilgoreCemetery

    Help identify a resistor without bands

    I'm definitely hard up, but my calipers are paid off. I'm getting about 15mm x 5.5mm, not including the leads
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