tag:blogger.com,1999:blog-2131958746786008795.post7119391820562500151..comments2024-01-24T11:52:22.915-05:00Comments on playing with bits: Harmon Kardon A300 capacitor replacementBradhttp://www.blogger.com/profile/13205011980298945921noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-2131958746786008795.post-27631668060105890342009-12-17T13:36:51.634-05:002009-12-17T13:36:51.634-05:00Hi Brad - I'm restoring my a300. I was wonderi...Hi Brad - I'm restoring my a300. I was wondering if you had the component list for the capacitors you replaced on hand. I'd like to order them now, but don't have the amp in front of me at the moment.alexhttps://www.blogger.com/profile/15417872662193103074noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-26994199926698229792009-06-23T13:57:36.387-04:002009-06-23T13:57:36.387-04:00Hi Aleks,
Yes, I am definitely still using my a30...Hi Aleks,<br /><br />Yes, I am definitely still using my a300 and loving it. Strange you are blowing fuses like that, have you tried powering it on without any tubes in it to see if it still blows? If it does, then it may be an issue with the power transformer ( but hopefully not as i don't know where you would find a replacement). If it doesn't blow with the tubes removed, I would just say to test every resistor and make sure none are open / no shorts and inspect the wiring as it is possible some of the old original wiring may be frayed as well. I replaced most of the resistors on my amp anyway as the tolerances were off on them causing uneven volume between the two channels.<br /><br />You will really need to use a variable ac transformer to test the amp as you can slowly provide power to the unit while watching it's current draw, this will allow you to isolate the bad component / short without blowing the amps fuse.<br /><br />Let me know if you are able to isolate the issue,<br /><br />-BradBradhttps://www.blogger.com/profile/13205011980298945921noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-69308098239060221172009-06-22T19:24:38.875-04:002009-06-22T19:24:38.875-04:00hi. i see that this is just a tad outdated, but i...hi. i see that this is just a tad outdated, but i came across your site while looking for info on my A300. I restored almost 2 years ago and have been on a constant hunt to gather the remaining HK a300 enthusiasts out there. I have all the info you may ever need on this amp. however, i have been having a problem with blowing out fuses as soon as i power the baby up, and i cant for the life of me track it down. I have tried everything and was just wondering if you had ever encountered this...just one day, i played it for about 2 hours and all was good, then suddenly fuse started to blow. hmmf...let me know if you are still using your amp and i apologize for the randomness of this message :)Lexhttps://www.blogger.com/profile/06779225454537635797noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-46099490653868421672008-11-22T18:28:00.000-05:002008-11-22T18:28:00.000-05:00I had purchased all of my caps through Digikey (ww...I had purchased all of my caps through Digikey (www.digikey.com). I had used the Panasonic EB Series caps which are rated up to a temperature range of 105 degree C. and are available in voltages up to 450V. I believe they are some of the best caps you can buy for the price.<BR/>-BradBradhttps://www.blogger.com/profile/13205011980298945921noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-39022213249245336022008-07-30T12:46:00.000-04:002008-07-30T12:46:00.000-04:00Brad, I found your blog post through a web search ...Brad, I found your blog post through a web search as I also have an A300 amp and am looking for replacement electrolytic cans. Can you tell me your source for the Panasonics? I cannot locate a suitable replacement for the three-section 100uf@200v/50uf@400v/200uf@50v. I have found acceptable replacements for the other two, but would prefer to get three of the same brand. <BR/><BR/>Thanks for any guidance you can offer.contrapunctushttps://www.blogger.com/profile/08415143696976079187noreply@blogger.com