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JohnW

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Everything posted by JohnW

  1. And while the capacitor seems to be missing from the Rectifier Board A list, the list does include two zener diodes, which I can't seem to find anywhere on the board. But I'm highly inexperienced, so maybe I just don't know what they look like.
  2. Thankfully, no. These are for sure fuse holders. Labeled as such, and on the bottom of the unit.
  3. Here’s a new discovery… every diode, resistor, capacitor on Rectifier A board shows at least some conductance… Except this little guy, which is the next link in line after the R9 resistor. Ok forgive my ignorance, but what is this? The C5 capacitor (which seems to be conveniently missing from the HK parts list)?
  4. And I wouldn’t BEGIN to know how to check B3.
  5. So if I read this right, there wasn't too much current going through the resistor...yet the resistor still cooked? So...too much current?
  6. Thought this might be easier than explaining:
  7. Holy shit, I actually followed that. Resistor in and voltage will be measured in the morning. Note: Original resistor was insulated.
  8. The fuse did not blow. I measured it without the resistor in the circuit. You’re saying I should put the resistor in before I measure?
  9. Ok, multimeter across R9 set for 2 volts reads fluctuations from -.02v to +.02v should it be fluctuating, or hold steady?
  10. It read .692 on both leads. Will test load across R9 next. Thanks again.
  11. I did replace the resistor and the proper fuse, and the resistor blew again.
  12. Yes, but it was only a .3v diode drop on both pins—reading went from 1.0 to .692
  13. Thanks, and how do I determine which pin is the "base pin?"
  14. Any tips on how to "check the transistor base-emitter and collector-base?" I have no idea what that means.
  15. Sirba tests good. Will know more when the proper fuse and resistor arrive tomorrow.
  16. That Sirba diode has four leads. Not sure how to test it.
  17. Here’s the front side of Rectifier A board. Those solder points look a bit crispy. Pic 2 is the other side. I’ve no idea what I’m looking at, but a used Rectifier A board is $29.99 on EBay.
  18. Thank you, will do. I checked everything on Rectifier Board A last night for shorts, and they were all good. But obviously they weren't shorted, because current is obviously passing through them. I'm a novice at this sort of thing. Appreciate the help.
  19. Yes Dave, I know that. Can anyone identify the resistor? Is that 8.5 watts?
  20. So I bought this receiver for $200, and it was DOA. Seller assured me it worked when he sent it and I believed him. So I removed the top and bottom covers and found all the fuses. One of them, FU1 (from the wiring diagram) a .5A fuse, was nonconductive. Aha! I didn't have a .5A fuse, but I did have a 1A fuse. Popped it in, and it worked! And then the resistor (R9) connected to the fuse started smoking. And then the the sound cut out again. Yes, I feel like a bit of a dumbass. .5A fuses have been ordered. And I'd love to buy a replacement resistor, but I cannot, for the life of me, identify what it is. I found it on the wiring diagram in the 430 service manual, but it's pretty much unreadable (see attached screen cap). I can't locate the resistor in the parts list nor in the schematics. But I am not terribly experienced readin schematics. Could someone please identify the resistor so I can get one, install it, and pick up where I left off? Thanks in advance.
  21. This is exactly what I use: https://www.ebay.com/itm/SPECIALTY-AV-2-Amplifiers-Receivers-to-1-Pair-Speakers-Selector-Switch-Combiner-/224545913401?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0
  22. I’m located in San Diego. Thanks.
  23. The new versions of Heritage are superlative…and priced that way.
  24. I can't speak to the modern versions of the LS and the CWIV...but having just switched from a pair of '85 Cornwalls to a pair of '85 La Scalas, I can attest to the difference in bass. I had high expectations, and I have to say, I was not blown away. Don't get me wrong--they sound amazing...more detail than the CWs, tighter bass (but not as deep). What this makes me realize, is just how special the CWs really are, that they're not that different from the La Scalas in quality--and this is the conclusion that seems to be drawn between their contemporary iterations as well: You trade maybe 10% in detail for a lower octave or two of bass.
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