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Equipment Repairs => Satellite and Freeview forum => Topic started by: harvey on May 16, 2017,07:07:26

Title: Amstrad drx550 sky box
Post by: harvey on May 16, 2017,07:07:26

No output from power supply. All output caps ESR reads ok. Primary section of the PSU board seems ok. The only faulty component found was 33uF 400v capacitor which was dried up and replaced. Still no output at all. Your help appreciated. Regards

Title: Re: Amstrad drx550 sky box
Post by: mend it on May 17, 2017,03:32:39

 The switch mode IC UI marked DM0365R can cause problems in these set but are had to source try eBay

Title: Re: Amstrad drx550 sky box
Post by: harvey on May 18, 2017,06:57:11

Thanks for the reply. I will try to find the IC.

Title: Re: Amstrad drx550 sky box
Post by: Davy on May 20, 2017,13:49:35

Have a look here at this pdf data sheet  0365RN.pdf]http://www.promelec.ru/pdf/FSD[M]0365RN.pdf (http://www.promelec.ru/pdf/FSD[M) and the Ebay link  https://www.ebay.co.uk/p/dm0365r-fsdm0365rn-switching-power-supply-dip8-ic/702125180?_trksid=p2047675.l2644 (https://www.ebay.co.uk/p/dm0365r-fsdm0365rn-switching-power-supply-dip8-ic/702125180?_trksid=p2047675.l2644)

Dave

Title: Re: Amstrad drx550 sky box
Post by: harvey on May 25, 2017,16:47:43

Hi, Thanks chaps for your help. Problem sorted. It was the IC DM0365R in the primary stage which was faulty. Your advice much appreciated. Regards

Title: Re: Amstrad drx550 sky box
Post by: mend it on May 26, 2017,02:53:52

perfect glad its sorted
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