Comments on: Revisit Of MARANTZ PM75 Amplifier With Different Problems https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Wed, 10 Sep 2025 14:44:56 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Parasuraman S https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453827 Wed, 10 Sep 2025 14:44:56 +0000 https://jestineyong.com/?p=35941#comment-453827 In reply to Yogesh Panchal.

Very true, Yogesh Bhai! Your analysis is correct! Many thanks!

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]]> By: Yogesh Panchal https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453820 Wed, 10 Sep 2025 08:32:12 +0000 https://jestineyong.com/?p=35941#comment-453820 Good Job! Sir,
Every technician has certain limitations in terms of knowledge, availability of materials and workshop set up and these limitations are reflected in the quality of work done by him.Now technicians are not wasting their time on the equipment where they don't get enough remuneration.
anyway you handled the case very professional way.

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]]> By: Parasuraman S https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453787 Mon, 08 Sep 2025 04:47:33 +0000 https://jestineyong.com/?p=35941#comment-453787 In reply to Mark J.

Many thanks, dear Mark!

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]]> By: Mark J https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453768 Sun, 07 Sep 2025 16:16:02 +0000 https://jestineyong.com/?p=35941#comment-453768 Parasuraman great job once again. Thank you for sharing.

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]]> By: Parasuraman S https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453762 Sun, 07 Sep 2025 15:04:28 +0000 https://jestineyong.com/?p=35941#comment-453762 In reply to Waleed Rishmawi.

Yes, we need to put up with such tamperings! What to do!

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]]> By: Waleed Rishmawi https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453758 Sun, 07 Sep 2025 13:39:52 +0000 https://jestineyong.com/?p=35941#comment-453758 Good job on the repair and that is an ugly modification that the previous technician did on this device, two different c’s missing? What a mess.

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]]> By: Parasuraman S https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453754 Sun, 07 Sep 2025 12:12:27 +0000 https://jestineyong.com/?p=35941#comment-453754 In reply to Albert van Bemmelen.

Thanks for your valuable inputs and a dig out history of Marantz!

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]]> By: Albert van Bemmelen https://jestineyong.com/revisit-of-marantz-pm75-amplifier-with-different-problems/comment-page-1/#comment-453747 Sun, 07 Sep 2025 09:59:24 +0000 https://jestineyong.com/?p=35941#comment-453747 Although Marantz is a well known manufacturer this example clearly showed why your aversion in handling such crude sets prevented you from carrying out such mass repair works at first.
Whoever designed this amplifier probably wasn't aware of the bad lifespan of capacitors and why the need for a friendly easy serviceable set is mandatory.
And that it was designed in a time when they still used the wire-wound connection method.
In december 1980 Marantz came in the hands of Philips. Only Marantz America and Canada stayed at Superscope. This Amplifier was made around 1989-1995. Maybe this design was made after Philips had taken Marantz over?
https://www.radiomuseum.org/r/marantz_digital_integrated_amplifier_pm_75.html

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