Question about Sony STR-DE545 Receiver

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Issues with soldering connections!

I sent an e-mail to you explaining the problem. Its basically loose soldering connections all over the place. If you could assist me in finding a pdf service manual for free i would be in-debted to you....I repaired this darn thing about 5 times without knowing much of anything. basically just picking out spots that look like they were crappily soldered from the manufacturer. I now if i had an easy to read service manual and some tips on removing excess solder i could fix this thing. Sadly im too poor to buy a new reciever so fixing this one is my only hope in keeping a surround system.

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  • NerdyChris May 01, 2008

    forget about it the thing is toast now.....there are shorts all over the place on the main board. several terminals are now fried. I still have it, but im trashing it shortly because its basically an ugly Sony paperweight now. i hate sony audio products, such cheap build quality and materials. And im without 5.1 now....or a receiver.

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Soldering proficiency, like welding, comes with experience.
Cold solder connections may maybe secondary to orginal problem. What problem were you having originally?

Posted on May 01, 2008

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Remote keyless intermittent function


I had the same problem. If your car is still under warranty, simply go to the dealer and have the keyless entry remotes replaced. If your car is not under warranty and you do not want to fork over the hefty fee for new remotes, you should be able to repair them yourself.

If you open your keyless remotes, you will likely find that the contacts which hold the battery in place have come unsoldered. Basically, the problem lies in the fact that Daimler/Chrysler used a cold soldering method when adhering the battery contact to the circuit board in some of these remotes. Under normal wear, these cold soldered contacts will eventually bust loose.

In order to repair the remote(s), you will need a soldering iron and solder.

1)Remove the screw from the back of the remote. Pry apart the two halves of the remote using a dime or penny.

2)Remove the circuit board, placing it battery side up. Remove the battery.

3)Carefully place the battery holders contact pins back into their respective holes.

4)Take care to put a small amount of solder on each of the loose contact pins. Put a small bead in both the back and front of each contact pin.

5)Replace the battery and put the circuit board back into the remote. Test to make sure the remote is functioning properly, then snap the back of the remote on and replace the screw.


Don't thank me, credit for how to repair this issue goes to 'Sodapop' from custommagnums.com.

May 01, 2009 | 2005 Dodge Magnum

1 Answer

No sound


Loose connection or cold solder and cleaning problem this is the main caused of no sound..Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....

Good luck:

Regards,
VOTIT

DON'T FORGET TO RATE

Aug 11, 2008 | Audio Players & Recorders

1 Answer

Eclipse radio model number cd3422 say help when turned on diplays 7a201418


It is a loose connection or cold solder and cleaning problem this is the main caused of no sound..Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....

Good luck:

Regards,
VOTIT

DON'T FORGET TO RATE;

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1 Answer

Siemens prisma 2 vc has lost volume


It is a loose connection or cold solder and cleaning problem this is the main caused of no volume..Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....

Good luck:

Regards,
VOTIT

DON'T FORGET TO RATE;

Jul 31, 2008 | Audio Players & Recorders

1 Answer

Denon RCD-M35DAB has tuner drift on AM, tap side of unit on rear righht hand side then ok for a while.


Loose connection or cold solder and cleaning problem this is the main caused of no sound..Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....

Good luck:

Regards,
VOTIT

DON'T FORGET TO RATE

Jul 30, 2008 | Denon Audio Players & Recorders

1 Answer

I can get no sound from my hitachi AX-M80 CD system


Loose connection or cold solder and cleaning problem this is the main caused of no sound..Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....

Good luck:

Regards,
VOTIT

DON'T FORGET TO RATE

Jul 29, 2008 | Audio Players & Recorders

1 Answer

Hi my pioneer SU-X950's volume keep going up and down on its own! help Thanx carl


Loose connection or cold solder and cleaning problem this is the main caused..Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....

Good luck:

Don't forget to rate;

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1 Answer

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Loose connection or cold solder and cleaning problem this is the main caused of your remote to malfunction.Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. Try to resolder the solder joint so it works normal again..

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1 Answer

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Your problem may well be a loose connection ( cold solder joint ) on the printed circuit board. A person would need to disassemble the set and remove the printed circuit board so that you can view the soldered side. Look for any connections that may be loose or discolored ( the color on all the soldered places should be a shiny silver color ). When you have located these area or places that seem to be different or loose, resolder them with a soldering iron, and electronic solder lead.You set should be fixed. Good luck and I hope this has helped.
AS A NORMAL PRE CAUTION, ALWAYS UNPLUG THE SET BEFORE OPENING OR REMOVING THE BACK

Ed
NC Electronic
Mills, Wyoming

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1 Answer

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All zeros ehh? nice.. :) I'm not sure that having that wire that was "loose" solderd on was a good idea. Pretty sure your talkin about the RF cable from the main board to you I/O card (the card with the power connections). this cable isn't supposed to be soldered on, although I don't see what it could hurt as long as the connection was good before the solder cooled. If you open the unit up.. (again) and take out the I/O card (power card) . Look on the back of that circuit card and make sure that there are three small ICs' in a row at the position that sits in the outter beveled part of the back cover. I know this is hard to explain, but basically, if your missing an IC chip and you can't find it, then there's no hope.. look at some of my other posts and try various software resets. if you find the small IC chip I'm talking about (somehow) then call that professional solderer guy back. Let me know. -Daniel

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