navigationGo.pngQuick Navigation
allprojects32.pngAll projects

favoriteStar32.pngTop projects
Alan numitron clock
Clapclap 2313/1386
SNES Pi Webserver
USB Volume/USB toys
Smokey amp
Laser cutter
ardReveil v3
SNES Arcade cabinet
Game boy projects
Home Presence Detector


navigationMail.pngContact me

3flags.pngWho's Alan?

Rand Nerd Tut
Datasheet Lib
Reddit Elec
Carnet du maker (fr)
ATmel blog (defunct)

Repair - Sony NAS-V7M

kalshagar - Repair - Sony NAS-V7M
Fail_Logo.jpgI found this baby lost and abandonned in the trash. Again, in Japan things are sorted, it's a separate box : I don't go diving in a see of garbage and used diapers to fetch these things. Anyway, since my wife needed something like that I brought it home. Let's try to fix it !

Fixing diary

Step 1 : initial status

Item is clean, no apparent degradation, no bruises, no scratch (again, I love Japan). A fair bit of dust though, indicates it had most likely not been used for some times.
Feeding it the AC power : standby led turns red, the right hand display has the retro-lightning turning on (or so), and you can hear the device emit a hit pitched faint hiss (regulator screaming for help?)
Hitting the On/Off switch does nothing, like all the other buttons.

First hypothesis : maybe power issue on the secondary or a dead cap (please make it a dead cap, my ESR meter arrived today in the mail, and it's easy to fix). Only solution, the operating room !

UPDATE: (later that night) after opening the baby, which was not that easy I can finally access the insides. And after searching on the net, apparently Sony did a little mistake with those speakers : there's a problem with the power IC and seems that after some times the machine just refuses to turn on. Hum ... seems pretty close of my problem.

Step 2 : investigation in powerland

My ultimate goal: fix it without getting shocked by AC or breaking it over the repairability point.

Finally, I couldn't fix it, changed job, let it for the bench for 6 months and when I started working electronics back I had no idea where I had left it so... it ended up in the garbage, a bit lighter with a few parts missing.
All content on this site is shared under the MIT licence (do what u want, don't sue me, hat tip appreciated) ~ Formerly known as (AlanFromJapan [2009 - 2019])