Comments on: Revived The Radio Pick Up In NATIONAL RX-FS21A Two-In-One But With A Sad End https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Fri, 06 Dec 2024 06:35:24 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Dr Ganga Phd music https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-440489 Fri, 06 Dec 2024 06:35:24 +0000 https://jestineyong.com/?p=23299#comment-440489 In reply to Parasuraman S.

I have a national rx fs21a.radio.casssete recorder. Any suggestion to repair the start record button not setting in .radio ok.
Need to play old cassests of masters lesson spl. Also aiwa.and sony cassette.player.pls help

Thanks.

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]]> By: RASHEED K H https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-403776 Thu, 06 Jul 2023 04:58:13 +0000 https://jestineyong.com/?p=23299#comment-403776 sir any chance to get ic AN6210

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]]> By: Parasuraman S https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371745 Wed, 28 Oct 2020 01:10:08 +0000 https://jestineyong.com/?p=23299#comment-371745 In reply to Yogesh Panchal.

Yes, very true! It can also happen inadvertently when the angle of the soldering iron is slanting. Many thanks for your comments!

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]]> By: Yogesh Panchal https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371730 Tue, 27 Oct 2020 13:23:58 +0000 https://jestineyong.com/?p=23299#comment-371730 Sir,
Good visual inspection skill is must when the equipment is repaired by another hand.as you stated here an overlapping solder on the FM IF coil
this type of mistake are possible when person is doing work in hurry.

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]]> By: Parasuraman S https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371703 Tue, 27 Oct 2020 01:43:02 +0000 https://jestineyong.com/?p=23299#comment-371703 In reply to Derek Nathaniel, Pakistan..

Very true! Many thanks for your comments!

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]]> By: Parasuraman S https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371702 Tue, 27 Oct 2020 01:42:22 +0000 https://jestineyong.com/?p=23299#comment-371702 In reply to Imoudu Onwumah.

ST2N2907 is a PNP transistor. Please see the link here :
Same is the case with SK100.

CL100 is equivalent to SL100 and CK100 is equivalent to SK100. Why the datasheet shows both as NPN transistors by CIL is not known. It could be a mistake. I have checked the CK100 in Peak Atlas for type and pin configuration before I put it. The result is evident, as the UPS is still working with the customer! I have been using CL100 and CK100 in place of SL100 aand SK100. Anyhow, many many thanks for bringing this issue to highlight!

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]]> By: Parasuraman S https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371701 Tue, 27 Oct 2020 01:12:33 +0000 https://jestineyong.com/?p=23299#comment-371701 In reply to Paris Azis.

Thank you dear!

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]]> By: Derek Nathaniel, Pakistan. https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371688 Mon, 26 Oct 2020 10:56:53 +0000 https://jestineyong.com/?p=23299#comment-371688 May their souls rest in peace this is the stage when no one can do anything for anyone it is God's will and we all have to accept it.

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]]> By: Imoudu Onwumah https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371683 Sun, 25 Oct 2020 23:05:30 +0000 https://jestineyong.com/?p=23299#comment-371683 Hi sir, Sorry to take you back.In ur last article on computer ups repair,you said u substitute trans ck100 for bad st2n2907a and it works. I check the datasheet for these two transistors for compatibility,I found out they do not have same pin out.So how did u connect ck100 on board for it to work sir
Thanks.

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]]> By: Paris Azis https://jestineyong.com/revived-the-radio-pick-up-in-national-rx-fs21a-two-in-one-but-with-a-sad-end/comment-page-1/#comment-371681 Sun, 25 Oct 2020 18:36:18 +0000 https://jestineyong.com/?p=23299#comment-371681 This is a cruel form of life’s irony Parasuraman. You saved your friend’s apparatus, while he lost his life...Anyway you did what you had to do for his sake and this is what counts! Just keep your friend in your memory. My best wishes for your wife (and family in general).

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