Marantz 4230

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Marantz 4230

Ron Ramirez
Silent Key

Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana

#14

08-24-2017, 08:00 PM

Just finished adjusting bias and DC balance. Yup, Brenda, you were right...the DC bias in the right channel was WAY off...too high! Meanwhile, the left channel was pretty much correct already. Probably because the left channel still has its original output transistors.

I used a procedure posted here on AudioKarma. It took about 35-40 minutes not counting the warm-up period. Oh, and I sort of cheated...I did not turn it off between measurements, I carefully moved my meter clips around from points to points while the unit was still on. Saved some time that way.

Now I need to align AM and FM...

--
Ron Ramirez
Ferdinand IN

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Messages In This Thread

Marantz 4230 - by Ron Ramirez - 02-20-2017, 09:34 PM

RE: Marantz 4230 - Epilogue - by TV MAN - 02-21-2017, 09:00 AM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 02-21-2017, 11:04 AM

RE: Marantz 4230 - Epilogue - by Steve Davis - 02-21-2017, 12:43 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 02-21-2017, 05:00 PM

RE: Marantz 4230 - Epilogue - by morzh - 02-21-2017, 05:41 PM

RE: Marantz 4230 - Epilogue - by rocketeer - 03-05-2017, 12:46 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 03-05-2017, 01:34 PM

RE: Marantz 4230 - Epilogue - by rocketeer - 03-05-2017, 05:40 PM

RE: Marantz 4230 - Epilogue - by morzh - 03-05-2017, 11:07 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 08-20-2017, 03:53 PM

RE: Marantz 4230 - Epilogue - by BrendaAnnD - 08-20-2017, 05:12 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 08-20-2017, 08:20 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 08-24-2017, 08:00 PM

RE: Marantz 4230 - Epilogue - by morzh - 08-24-2017, 09:14 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 08-24-2017, 09:55 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 08-26-2017, 11:49 PM

RE: Marantz 4230 - Epilogue - by morzh - 08-27-2017, 07:42 AM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 09-04-2017, 10:12 PM

RE: Marantz 4230 - Epilogue - by morzh - 09-05-2017, 01:56 PM

RE: Marantz 4230 - Epilogue - by BrendaAnnD - 09-05-2017, 03:43 PM

RE: Marantz 4230 - Epilogue - by morzh - 09-05-2017, 03:43 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 02-14-2019, 07:33 PM

RE: Marantz 4230 - Epilogue - by morzh - 02-14-2019, 09:17 PM

RE: Marantz 4230 - Epilogue - by mikethedruid - 02-14-2019, 09:27 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 02-14-2019, 10:25 PM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 02-20-2019, 09:12 AM

RE: Marantz 4230 - Epilogue - by morzh - 02-20-2019, 09:44 AM

RE: Marantz 4230 - Epilogue - by Ron Ramirez - 02-22-2019, 10:52 PM

RE: Marantz 4230 - by Ron Ramirez - 02-23-2019, 11:04 PM

RE: Marantz 4230 - by EdHolland - 02-24-2019, 02:30 AM

RE: Marantz 4230 - by Ron Ramirez - 02-24-2019, 07:05 PM

RE: Marantz 4230 - by Ron Ramirez - 03-04-2019, 10:40 PM

RE: Marantz 4230 - by morzh - 03-04-2019, 11:34 PM

RE: Marantz 4230 - by Ron Ramirez - 03-05-2019, 11:59 AM

RE: Marantz 4230 - by morzh - 03-05-2019, 02:17 PM

RE: Marantz 4230 - by Ron Ramirez - 03-05-2019, 02:28 PM

RE: Marantz 4230 - by morzh - 03-05-2019, 04:35 PM

RE: Marantz 4230 - by Ron Ramirez - 03-05-2019, 04:43 PM

RE: Marantz 4230 - by rocketeer - 03-05-2019, 05:36 PM

RE: Marantz 4230 - by Ron Ramirez - 03-10-2019, 04:24 PM

RE: Marantz 4230 - by radiohenry - 03-10-2019, 09:08 PM

RE: Marantz 4230 - by Eliot Ness - 03-12-2019, 02:18 AM

RE: Marantz 4230 - by Ron Ramirez - 03-14-2019, 08:44 AM

RE: Marantz 4230 - by PhilcoMike - 03-15-2019, 03:08 PM

RE: Marantz 4230 - by Ron Ramirez - 03-16-2019, 07:02 PM

RE: Marantz 4230 - by rfeenstra - 03-16-2019, 07:14 PM

RE: Marantz 4230 - by Ron Ramirez - 03-16-2019, 10:08 PM

RE: Marantz 4230 - by Ron Ramirez - 04-09-2019, 07:47 PM

RE: Marantz 4230 - by EdHolland - 04-10-2019, 01:35 PM

RE: Marantz 4230 - by Ron Ramirez - 04-20-2019, 03:38 PM

RE: Marantz 4230 - by Stall-U-Rated - 04-20-2019, 04:29 PM

RE: Marantz 4230 - by EdHolland - 04-20-2019, 10:03 PM

RE: Marantz 4230 - by Ron Ramirez - 05-26-2019, 06:24 PM

RE: Marantz 4230 - by Paul Philco322 - 05-26-2019, 08:51 PM

RE: Marantz 4230 - by Eliot Ness - 05-26-2019, 09:15 PM

RE: Marantz 4230 - by EdHolland - 05-29-2019, 10:59 AM

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