AVS Forum banner
Status
Not open for further replies.
1 - 20 of 55 Posts

·
Registered
Joined
·
28 Posts
Discussion Starter · #1 ·
Ok

This probably isn't the greatest idea but its working for me.


The noise on the HD-100 was driving me up the wall this unit was frustrating me to the point of smashing it on the ground because it would interrupt my sleeping sessions.So I decided to let this puppy run without its fan. It been going for about 2 1/2 weeks with no problems what's so ever it gets hot but not much more than if the fan was going. If I had a thermistor probe I can tell the temps exactly but by touching the top case its slightly warmer.Most of the heat is being generated by the power supply transistors and some type of IC processor with a nice size heatsink.My bedroom is now back to its dead quit state at night when silence is most needed. And if this unit fails O well now I can really validate getting that $149 dollar extended warranty for 3 years. That's what happens when products aren't truly designed you get the loudest fan noise possible SONY will have to redesign the case or just make another type of STB.I wanted to do the same thing on my pc but it crashes out to much.Good thing its not in my room talk about fan noise.
 

·
Registered
Joined
·
294 Posts
That's one way of getting rid of the noise. Of course it will work, and chances are good it will run without the fan for a number of years. The electronics are designed for a certain heat range. Kind of a like a stationary battery likes to be in a 77 degree year round environment. If it's warmer, you gain more capacity, but reduce its life. If it's colder, you get less capacity, but the battery should last longer. This may not be the best example, but by removing the fan, you are basically reducing the life span of the STB.
 

·
Registered
Joined
·
228 Posts
Before you made the choice of buying the sony, you probably didn't even know about the problem of the fan. For one, the Toshiba DST 3000 has not fan. Do they have a very different design ? I cannot believe it is true. The unit runs quite hot, but it is working. So, forget about the life span issue. If it works without the fan, let it work that way. Don't we all have the feeling sometimes wishing our old TV to break down, so that we can buy a new HDTV? If you sony runs 3 years instead of 4 years, so be it and get a newer model in 3 years. In the meantime, enjoy HDTV and a good night sleep.
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #4 ·
You are correct I imagine in a year or two when this piece is ready to give out there will be new devices out that will just make the SAT-HD100 a regular stb and like most people I will upgrade but it sucks to get the latest and greatest and not be completely satisfied.


Note in order to have it operate without the fan the entire module that checks for the fans rpm must be disconnected from the Mo board if anyone is gonna try. GL
 

·
Registered
Joined
·
9,196 Posts
Not a good idea. Mainstream consumer electronics is built as cheaply as it can be. That fan is in there for a reason. You need some way to get that heat out. A quiter external fan would be a better solution.
 

·
Registered
Joined
·
731 Posts
Quote:
Originally posted by ricka:
Why not just stick something in the fan's path so it won't spin?


--Rick
Because the unit detects the fans RPM, that's why he said to disconnect the circuit board.


Roger


------------------

System: B&K AVR307, Toshiba TW65H80 RPTV, Sony DVP-S9000ES DVD, JVC HR-5400U SVHS

Philips CDR880 CDR, Sony SAT-HD100 & B50 DBS, Phase Linear 8000 Turntable

Polk RT2000P mains, Polk CS350 Center, Polk LS/FX Surrounds

Sunfire Signature True Subwoofer, Pronto Remote
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #8 ·
Yes,

A quieter slower external fan may be a good solution.Currently the fan that comes with HD-100 has a pretty high cfm rating for a little fan thus causing it to make much more noise when the air flow is disrupted like the cover or the exhaust duct. What's really funny is that my Plasma PDS-4222 has 4 Fans that don't even come close to the noise level that the one fan makes.

Lately I have been trying to come up with good ideas to reduce noise and this one works good but its still unacceptable for me.Mounting the fan in the middle of the board with some double sided tape. and nothing in front of the fan to disturb the air flow the noise is reduced greatly but I would like to achieve much more of a stealth operation of the unit.
 

·
Registered
Joined
·
134 Posts
Hey spliffstar,


Who it be possible for you to take a couple digital pics of your HD100 fan remount? I think this would allow input from other Engineering expert on this board to give you suggestion.


------------------

CC
 

·
Registered
Joined
·
134 Posts
Hey spliffstar,


Who it be possible for you to take a couple digital pics of your HD100 fan remount? I think this would allow input from other Engineering expert on this board to give you suggestion.


------------------

CC
 

·
Registered
Joined
·
134 Posts
While you are at it, can you also give us the db level before and after??

Thanks.


------------------

CC
 

·
Registered
Joined
·
381 Posts
Has anyone looked at a parts catalog to find a high quality replacement fan. How about a super flat fan that you can place over the ventilation holes. How about one of you high end installation specialists tell us how you cool rack-mounted high end installations.
 

·
Registered
Joined
·
1,797 Posts
Why not just stick something in the fan's path so it won't spin?


Because an electric motor that is seized (i.e., not spinning) is a heater, and eventually, a fuse (or circuit-breaker) tester.


Disabling fans, etc... in such a manner will certainly cause the thermal protection on the device to activate, and perhaps cause a fire if it doesn't have one!


------------------
BOYCOTT DVI/HDCP & JVC!
 

·
Registered
Joined
·
1,436 Posts
Ok,


Stopping the Fan is not a good idea, however how about just cutting the blades. Let the middle part spin. I'm throughing out ideas here. Personally I can wait. Panasonic has already told me (in e-mail) that they are going to fix the fan.


--Rick
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #17 ·
No Db meter available and I wont be able to post any pics because there is no fan inside currently. but if you can imagine the fan being mounted in the middle of the board with no support but some double sided tape at the bottom.This makes the noise level much more comforting.

The Fan doesn't actively cool any certain device in its original location just to remove hot air so

mounting the fan in the middle may circulate the hot air? but it cant be any worse than its original location which I feel is inefficient but it beats none at all. maybe some bigger heatsinks can do the trick.

Room temp can go a long way too when I wake up in the morning and touch it its cool the afternoon when my room reaches about 73dg its much warmer lets see what's happens to this unit during the summer months. extended warranty here I come http://www.avsforum.com/ubb/smile.gif


[This message has been edited by spliffstar (edited 05-02-2001).]
 

·
Registered
Joined
·
134 Posts
Thanks. Have you thought about mounting the fan outside the box???


------------------

CC
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #19 ·
No I havent tried that outside mount idea my assumption is that it will be just as loud. I would recommend just a smaller replacement fan that moves slower causing airflow be disruption not to be a big issue.
 

·
Registered
Joined
·
1,525 Posts
Here are some more ideas, after removing fan:


a)Install big heatsinks on all parts that get hot.


b) Fabricate a new cover from perforated metal with a larger open area for better air flow.


c) Place the unit on top of cool operating equipment and don't place anything on top of it. I'm sure they designed the fan size assuming the unit is in a cabinet sandwiched between other audio/video gear.


or, if you leave the fan in:


d) Install a resistor inline to slow the fan down. I do this to the extra fans in my PC and it makes a big differnce. I even have a multi-position switch with different sized resistors to choose different fan speeds.


e) If you can, plug the unit into the back of your audio receiver, most have a switched outlet.


Glenn
 
1 - 20 of 55 Posts
Status
Not open for further replies.
Top