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wrf

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Everything posted by wrf

  1. Updated manual has been posted. @Cavscout -- Is the protect LED coming on at all?
  2. Welcome to the site. Sorry to hear about your amplifier having problems. Most carver amplifiers that "cut out" are going into protection for some reason. Very unlikely that the transformer has anything to do with the problem. In fact, the M-200 is what carver calls a Mag Coil power supply. It is NOT a standard transformer. Your amp needs a complete checkup to determine IF and WHY is is going into protection. Check the manuals here on the site. There is an excellent service manual for the M-200. It contains a great theory of operation section and a detailed check out procedure. Good Luck. Let us know how it goes. One you narrow down the problems we may be able to assist you.
  3. Selling that equipment is no small task. Testing, cleaning, packing and shipping will take time. Packing in particular can be challenging. UPS and Fedex will pack things, but they are expensive and often do a poor job. Feel free to post anything you have. Offering it for local pickup will help. I know Barry had a lot of nice stuff.
  4. Welcome to the site. Look around, ask questions. There it a lot of info here.
  5. Welcome to the site. Check out the manuals. We got a service manual for the 6200.
  6. Welcome to the site. Like @3M_Audio said, a LOT of info is available here on the site under "Manuals and Specsheets". Check with Greg at nelionaudio.com. He owns this site and can also be reached via PM at @Nahash5150. I know he had quite a few several years ago.
  7. @Evancox Welcome to The Carver Site. We've got lots of info on the M-400. Check out the service manual and it will provide a great overview of how the amp works along with trouble shooting tips. In case you haven't found it yet, the manuals are along the top of the page under "Manuals and Specsheets". The M-400 is one of the oldest Carver amps. Give us an overview of your background and what kind of test equipment you have. The M-400 is a bit of a jigsaw puzzle and not a great way to start your education, but it's been done. Give us a quick description of its condition and you will likely get tons of help.
  8. Welcome to the site. There's a lot of info here. Feel free to ask questions, it can often take time to get your bearings.
  9. PM-1.5t are pro amps. Most have had a very hard life doing service in clubs and bars. @4krow gives good advice. Pop the cover and take stock of what you have. Be careful of what you touch. Best to let it sit for about 30 minutes after you pull the plug to allow the capacitors inside to discharge. Just in case you haven't found our library of manuals yet, look at the menu of items across the top of the home page. Click on "Manuals and Specsheets". there you will find manuals for Carver, Phase Linear and Sunfire. The PM-1.5 has an extensive section of service information and diagrams. Welcome to the site.
  10. @Johnny_Law I hope you found the manuals. If you didn't, just look at the menu items across the top of the home page. One will say "Manuals and Specsheets". You will find Carver, Phase Linear and Sunfire manuals there.
  11. @CarvEAR Welcome to the site. You have chosen a classic vintage pair with the C-1 and M-1.0t. There is lots of info on both of these units. But be careful, you might get the bug to upgrade them. Small note on the C-1/M1.0t combo. You may get a slight buzz in the speakers if you stack the C-1 directly on top the M-1.0t. Its not bad, and you may not even hear it depending on your speakers. Once again, welcome.
  12. @nld Welcome to the site. There is a ton of information on the AL-III here. You should start with the Owners Manual and Service Manual. Look along the top series of menu items. Select manuals and spec sheets. There you will find manuals for Carver, Phase Linear, Sunfire, etc. Then you can check out the Loudspeaker forum. Many members had shared their insight on the AL-III's and their crossovers. You might have to poke around a bit in the sub forums to find what you are looking for. Don't hesitate to ask questions as you get your bearings. We are here to help. https://thecarversite.com/forum/76-loudspeakers/
  13. @DanoFL, Welcome to the site. We've Got a lot of info in the MXR130. Owners manual, service manual and a few repair tip. Look around, ask questions and you will soon get your bearings. What kind of speakers are you running?
  14. @otisboss Wow. So much to unpack. @jazzman53 is a huge fan of the TFM-25. His posts are excellent and can be used as good guidance. I wouldn't be too worried about knockoff caps. Nichicon and Chemcon are good brands. I would hold off on shot gunning all the parts you have into the amp. I'm a big fan of first diagnosing and fixing any problems before carpet bombing the amp with new parts. Truth be told, the binding posts and RCA connectors in the TFM-25 amp are fine. Changing them may look nicer and feel better, but unless there are problems, the stock components should be good. @Circuits & Concepts is an excellent and reputable source of packaged components. Mouser and Digikey are good sources for individual components. So sorry that the upgrade information is scattered. This might be an opportunity for you to create a consolidated thread for others. We are an all volunteer site, supported by donations. Sometimes folks get fired up and post excellent DIY tutorials. Sometimes somebody gets motivated and consolidates fragmented info. It all depends on the membership. This is your chance to create a timeless contribution to the Carver community. Depending on what you find after an initial test and survey of your amp, you may want to consider sending it to a pro. It's not a bad starter amp to learn on, but you can dig a big hole if you are not careful. We are usually very responsive to questions you may have and can help, but diagnosing an amp via photos and messages only goes so far. Greg, the head honcho of Nelion idoes excellent refurb work. You can contact him directly here @Nahash5150 or via his Sound Room and even his web site. nelionaudio.com Good luck and keep up posted.
  15. Welcome to the site. Congratulations of finding the TX-2 service manual. Not everybody finds the manuals that quickly. Hopefully your problem is a simple one. Keep us posted on your progress.
  16. Welcome to the site @otisboss. I assume you have found our library. There is an excellent service manual for the TFM-25 there. The service bulletin understates the potential damage on the PCB. In extreme cases, the board under the resistors and transistors targeted by the service bulletin can become severely burned and even damage the traces on the back of the board. Be careful. It's easy to cause further damage when removing components in this area. Inspect the back of the board carefully for overheated solder joints and weak traces. Is the amplifier currently operating properly? If not, I would recommend doing a bit of diagnostic work BEFORE the recap and service bulletin work. It's always good to know what's broken before unleashing a bunch of parts on an amp. That way you can set expectations. Rarely does a shotgun of new parts solve an unknown problem in an amp. Even if the amp is working properly, I would recommend a quick health check prior to replacing the parts. Power supply voltages, bias setting, DC offset etc. That way if there are problems later you know if the new parts caused the problem. Good luck. The TFM-25 is a fine amplifier and well worth the updates.
  17. Welcome to the site. There is an overwhelming amount of information sprinkled around. Anytime you start a tread, as you did, you automatically follow it. That way you get notified when anybody replies. Be persistent with Nelion. Greg, @Nahash5150 checks in regularly. Also check out his Sound Room.
  18. I've seen vertical Arrays. Two shorter caps with adaptors. Stack em up. Screw mount on the bottom adaptor and run heavy gauge wire on either side to connect the stacked caps in parallel.
  19. I for one, am weary of the constant droning about resistive loads, measurements, reactive loads, high voltages, etc. Measurements play a role in verifying the proper operation of an amplifier. Your ears are the final judge. ignore either at your own peril.
  20. Inverted amplifiers such as the M-400 and M-500 are an interesting idea. Yet it didn't really catch on. In fact, I can't find any inverted amplifiers today. From your perspective, why have inverted amplifiers faded away?
  21. @pbzka Welcome to the site. We've got a lot of free info on Carver equipment, but only have the service manual for the 6200. There is an owners manual for the 6250 which is likely similar to the 6200. The first step in troubleshooting your receiver is to determine the full extent of the problems. Does the tuner work? Do the audio connections for video work? It's odd that the phono would work fine with the other audio inputs not working. Does the remote work at all (if there is one)? Often when all the inputs stop working you will find the tape switch is in the wrong position. Judging from the 6250 manual, the tape switch must be pointed UP to allow the phono/tuner/CD/Aux/Video inputs to function. I know, your phono works fine, but did you move any switches during your test? Once the full extent of the problems are determined and cockpit error is eliminated you have a very challenging job. The 6200 appears to use solid state switching to switch among inputs. Do you have the skills and test equipment to trouble shoot this? Once you get past opening the cover and looking for burned components, you will need a multi meter, oscilloscope and a test signal generator to narrow down exactly where the failure might be. You will also need electronic skills, patience and good eye sight to read the schematics in the service manual. Receivers are a tough place to start your Carver trouble shooting education, so you might want to consider sending it to a professional for repair/restoration. That receiver is over 30 years old and may be suffering from a variety of age related issues. Try the search functions of the site as well. A simple search for 6200 turns up a lot of older posts. Not sure if any pertain to your situation, but it would be useful to review them. Good luck and keep us posted on what you find.
  22. Oh. And be aware that this amp took a tremendous beating at the hands of Amir and others on ASR. Bottom line is that they didn't know how to test it and ignored advice on the proper test procedure. I could start ranting, but that's the bottom line.
  23. @AudioResurgence Welcome to the site. You've stumbled into a group of people that are quite experienced the the Crimson 275. Many of us participated in a special build of the 275 back in 2018. Bob offered a kit (actually more a box of parts) where he provided guidance on how to assemble what we ended up calling the CF2018 amp. I believe it to be identical to the Crimson 275. Search around on the site, you will find extensive discussion on the build process with photos and schematics. I looked at your blog. You definitely have a factory Crimson 275 that has been seriously modified. Forgive me for lifting a photo from your blog, but there are clearly some mysteries surrounding the filament wiring and some bonus (and burned) resistors. The Zobel network on the speaker binding posts also seem to be missing. I strongly suggest not plugging it in until either the mods can be understood or removed. Here's a similar shot of a CF2018 amp that is working great. It's a fine amp. They rarely fail. I assure you that Greg at Nelion throughly understands this amp as do many site members. If Greg is too backed up or reluctant to take on the mods, you may find someone here that can help out. Good luck and keep us posted.
  24. Questions of the BillD upgrade? Start here. https://thecarversite.com/topic/8632-billd-c-1-mod-upgrade-manual-and-parts-list/
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