![]() This article was prepared for you by Parasuraman Subramanian from India. It is important that we do connect a 10K Resistor and a diode at the output, without which it did not work, because of the capacitive load on the Radio.įit the Radio and tried it out several times, with a lot of amusement such as a child will have, when its invention or modification of a toy works well!Īnother proud service-cum-project work added to my ever bulging satisfaction list! Rechecked the connections and gave the power, it worked very well. The work looked very crude, as my aim was at the result! I removed all the SMD components from the Board of the Radio and with a lot of study and care, populated that area with regular components, as SMD was not available. Soldered ‘octopus’ legs on it, then once again tried it on a breadboard. of IRF7319 to AliExpress, got it delivered within 25 days through post. Having tried and confirmed that the circuit was ok, I ordered for 10 Nos. I connected it to the Radio too and it worked. Then replaced it with an LED connecting a current limiting resistor in series. ![]() It worked very well! First I tried it giving the power supply itself as the load and connecting a Multimeter at the output. I forgot to note down the Mosfet numbers), in a bread board and tried. Since I was not having IRF7319 IC with me nor was it available locally, I connected two separate mosfets of P Channel and N Channel (Any number would do that would work in low voltages. Located a good latching circuit from the following site: Since the number was not clear enough, I clicked three snaps using different settings: The IC number used in this radio was HW9315, but showed BU2305F in the circuit diagram, from the service manual downloaded from the following site: ![]() Well, such challenges would always evince great interest in hobbyists like us and I started the work right away! As he had already opened the set, cleaned and gave me the screws in a separate packet, that portion was saved! Sams or SAMS Technical Publishing.This Sony Radio ICF-570 was brought to me by a technician friend of mine, with the complaint that the press to on/off section is not working and as the IC was not available and he wanted me to replace it This site is not affiliated with Howard W. All the brand and product names are trademarks of their respective companies. By purchaseing these files you agree to these terms.Īll the trademarks in these documents and web site are registered by their respective owners. If you make a mistake or have additional questions I will work with you to help you get the right file. Without notice and we will not be responsible for any mistakes found in the manuals, publications, index, or files offered here.ĭownloads are not refundable once download email is sent. We make no warranty of any kind with regard to the content of these vintage manuals, publications or files. Thanks for visiting.ĭisclaimer - Digital files purchased here are copyrighted and for use by original purchaser only and may not be redistributed or resold. Feel free to contact me with any questions. I offer low cost, quick turnaround on orders, instant downloads of over 3,000 of the most popular Photofacts, and originals by mail.ĭownloads are available Internationally and original PhotofactsĪre mailed anywhere in the USA. Transistor radios, phonographs, amplifiers, tape recorders, and TVs. Photofact service manuals typically include schematics, parts lists, diagrams, photos, and detailed service information on tube and Original Photofacts are also available from 1946 through 1970. Resolution downloads ( sample) of the original Photofact service folders cover 1946 through 1963. Sams Photofact service manuals with schematics. com This site offers downloads and original Howard W. Tube and Transistor Radios, Amplifiers, Record Players, Tape Recorders, and TVs RCA Zenith GE Philco Crosley Motorola Admiral and More! Photofacts: Photofact Service Manuals with Schematics
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