My power supply has burned out on my Pioneer DVR-225. I've taken off the cover to look at the power supply board. It looks like one of the capacitors popped.
The fuse is still in tact.
I'm trying to find a schematic for the power supply (VWR 1378) so that I can purchase the correct part?
Is there any way that I can verify that it is the capacitor that failed? I can't smell anything on it...but it is bulged on the top and there is a slight brown spot on the top as well (near the seam)
Apparently there was a problem with some of the capacitors in these models. Your capacitor definitely is popped.
I had the same problem. The fuse was okay, but
two capacitors were blown. One was at location C23 and I think the
other at C17. I took it to a local electronics shop and they replaced
and soldered the new capacitors on for me. It only cost $16.22. They
were a 3300 µF and a 1000 µF.
I also had the same problem. I am no electrician, so i took mine into Best Buy where i had extended service on it. The power supply is on "back order" and wont be here for 3 months. Basically, they're telling me, they cant or wont fix it. I'll be getting a new recorder, but I've been happy with this one.
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I have a solution to power it on again quickly. Unplug the power cable, short out the pins in the power socket in the back of the machine ( NOT THE POWER CABLE ) and plug the power cable back in - it should go into standby mode immediately. I think the problem is caused by a capacitor on the power supply board going faulty with age. I have not had time to open the machine to check yet, but I will do so soon.
C14 & C20 are in fact 2200uf @ 10VDC. C15 is 1000uf @ 10VDC. After reading these posts, I took a closer look at the ps board, and sure enough C20 top is slightly ballooned out. We'll be replacing all 3 with 16VDC caps shortly. BTW, the high pitched whine is from the power supply because it's a switching supply and creates some HV.
Hi Saturn et al, I had similar issues with my Pioneer DVR-520H. It completely went off for quite a while when it should be going to standby after a timer session. At the start it would come good after a few days. Eventually it went off altogether and nothing would bring it back. With my father-in-law being an electronics person we investigated with the help of the service manual which I found on the net. The finger was duly pointed at the power IC (MR2920) on the power supply board (Pioneer will sell only the complete board). I ordered the IC from the UK (nikko-electronics.co.uk) GBP8.99 which was the only place I could find it online and soldered it in myself (easy, if you can solder). All fixed and working again. Hope this helps.