Question about Dell Dimension 4700 PC Desktop

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You have to put a lot of weight on the heat sync for it to boot up

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I would assume that it's the cpu heatsink? Actually, it's a bad thing to put extra weight on the heatsink for it may damage the processor. The spring and locking mechanism of the heatsink is just enough to transfer the heat from the processor to the heatsink. Problem maybe on your processor not properly seated on the slot. Remove the heatsink assembly, and release or remove the processor from the slot. Check if there's a foreign object in the slot, a brush will do the cleaning. Reinstall the processor and the heatsink assembly.

Posted on Sep 13, 2010

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Posted on Jan 02, 2017

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1 Answer

After powering on monitor says no sync


I've almost the same problem. When the system turns on the monitor doesn't sync. After a variable trials with down/up the sync is enabled and the computer starts.A very clear event occurs : when the monitor can''t sync ( and system doesn't boot)you can hear very clear a high fan rotation. When I look/hear in the system the Isuspect the cpu fan. The system boots ( monitor syncs) when the fan rotationgoes from high to low. So the system hangs on an internal check on the rotation speed of the cpu fan.I've googled a lot , but until now doesn't find an answer . Possibilties which I think about : replace cpu fan , clean cpu fun ( but it looks clean).I cannot measure the fan rotation speed when the system is hanging. At normal rotation all info can retrieved witth the program cpu-z.Did you already have a solution ?

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Hi,the problem with your ps3 is a heat sync failure,it's a common problem with the ps3,however,here is a detailed solution to help you out;

You have to disassemble the ps3 first, (hint) there is a srew were your rubber boot is on the bottom were it stands up remove this srew but you my have to get a star bit with a hole in the center of it. 2. After removing the cover then sides to the screw,lift the cover to remove all visible screws in the second cover.
3. Lift the second cover in a hinged motion to the front of the ps3 be careful not to pull the hidden carbon wire underneath of the cover if done properly you will see the wire when you lift the cover. To release the wire you must lift gently on the black clip holding it and it will release with no problem.
4. You then lift the blue ray drive up and then dissconnect the wires to it. then remove the power pack which is to the left of the blue ray drive remember there are screws holding this down, remove the wires then remove this peice as well, then remove any remaining screws on the mother board cover except the large philip head screws holding the clips that are in a slant. lift the mother board out to reveil the fan on the bottom now remove the srews that are slanted. the fan will then seperat from the mother board. then clean both of the contacts on the mother board and fan with rubbing alcohol. then seperate the metal from the mother board.
attention; there will be a watch battery connected to the metal,disconnect from the mother board. gently lift up on the metal to seperate the mother board from the metal. At this point you must be extra careful not to move any of the parts on the mother board remove the rubber peices then cover the heat syncs so they dont melt use a heat gun that can reach a temp. of 350 degrees Cel heat for 15 sec on the three heat sinks with a distance of 1 inch or greater move the heat gun counter clockwise on the sensors. during this time the peice must be level or it will hurt the system. After heated you will then need to let cool for 15 min. then flip the board over and hit the exact same spots in the same steps. at this point your problem is solved. Make sure all the peices of rubber that was on the chips is put back in the right spots too.You then put the metal back on the systems mother board at this point clean the syncs again then apply the artic silver in a thin bead on two heat syncs note not too much and not to little just enough to cover the syncs with a thin coat then connect to the fan. reconnect the fan then put the screws back in that holds them together then reattach the power supply but dont srew it down then remove the srews on the fan moter then remove it plug in your system switch it on stand by then press the sensor pad metal to start the system note this will not hurt your system this causes the artic silver to soder the heat syncs together only do this till you see a orange light come from the board near the fan then shut the system down then reattach the fan and reassemble.
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I had a similar problem with excessive fan noise on my Dell Dimension 5150. The solution was to replace the worn heat sync compound that was between the cpu and the heat sync itself. (£0.99 ebay)

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1 Answer

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