adpopulum
Well-Known Member
Picked up a minty Sony DVP-N900V the other week for free knowing that it was not working. The issue is when I power up the unit it turns on for about three seconds (green light) then goes into standby mode (red light). When in standby mode pressing “play”, “open” etc. will start the cycle over but it won’t turn on. Did a quick search online and found someone describing the same symptoms as well as a temporary “fix” using a hair dryer! Well I immediately though this was a case of someone jumping to conclusions attributing an effect to an unrelated cause and I parked that “solution” in the back of my brain. I got myself a copy of the service manual and lo and behold, right there in the troubleshooting section is described this very condition. Apparently it is a faulty IC. I had a look at the board and found the culprit. Everything looked good (i.e., no signs of excessive heat or water damage). Then I recalled the story of the hairdryer fix and remembered that this fellow had applied heat to the same board that housed this IC… for shits and giggles I went upstairs and borrowed the wife’s fancy new hair dryer and in about 15 minutes the damn thing fired up and was playing CDs perfectly! I listened for about an hour then shut it down. Turned it on and off a few times and all seemed normal so I went upstairs and had some dinner. About an hour later I was back to the same original state of not coming out of standby mode. So back at it with the hair dryer and on she went again. This time I left it on all night (certainly long enough for the heat from the hair dryer to dissipate) and in the morning it was still running properly. I assume as long as there is current running through the IC it will continue to work. After it was off for a while the original state returned.
I doubt there is an easy or cheap fix for this and it will likely wind up as a parts donor but I am curious as to what is going on here? Can anybody explain why heat would temporarily fix the issue?
I doubt there is an easy or cheap fix for this and it will likely wind up as a parts donor but I am curious as to what is going on here? Can anybody explain why heat would temporarily fix the issue?