Drale

Panasonic SC-HT900 freezing picture fix.

I bought a SC-HT900 couple years ago and not long after having it, video began to (if I remember correctly) freeze up when playing movies. I did some research and found out it is the decoder chip overheating. There are no fans or top ventilation in the disc player (SA-HT900) (although there is some vents on the bottom, lol what?). So I cut a hole in the top (this was a chore) above the decoder chip, which is on the green circuit board and says DTS, and put a 12 volt fan on it. Looked for a place on the circuit board providing the proper voltage and connected the negative to a screw for ground. The location to solder the positive wire to is (going by this picture I forgot to write it down) J328. There is C750 above that towards the back. The bottom of this picture is facing the front.

sc-ht900_2

sc-ht900_3

sc-ht900_1

It is pretty quiet. I’ve been using it for years now, maybe a couple times a month without problems. There is supposedly another issue with a fan in the subwoofer that causes popping noises in the speakers. But I haven’t had this problem. I could probably fix it the same way. Here is how one person fixed it.

I doubt this is going to be of help to anyone since this system is so old, but I thought I would share. You never know.

Here is some detailed troubleshooting information about a freezing issue.


Categorised as: Troubleshooting


3 Comments

  1. Gaston says:

    What’s the fan flow direction in the dvd player and the subwoofer?
    i fix the subwoofer a couple weeks ago but after 3 o 4 hours of use i still get some popping noise…
    The dvd player get really hot so your idea is great.
    subwoofer air flow in or out?
    dvd player air flow in or out?
    thanks keep up the good work!!!

  2. drale says:

    The dvd player fan I have blowing out to pull air in from the vents in the bottom and heat away from the chip.

    The subwoofer fan should blow out because I think there is vent in the bottom. Ive not messed with the sub fan or had popping.

    Highest volume I use is 30. Sometimes 28 or 26. But mostly try to limit 30. I think i read that somewhere.

  3. Gaston says:

    It Was hard to cut the metal but is done.
    Last last night i saw a movie ( 2hs ) and the dvd Player was cool.
    Thank for your help!

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