Question about Panasonic SC-HT1500 System

3 Answers

Unit not powering on

I was told that I needed the system control board to be replaced . DOe anyone have any idea where I can get this item ,including the part number etc.
Ricardo

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Check the link below. I already rresponded to this problem before. You need some "soldering" to perfom. I already have the same problem twice, those slashes and "not powering" unit are typical signs for burnt out electrolytic capacitors.

Here is the link to read for you with detailed information and link with pictures. You can order parts from Panasonic website, and some guy in TV/electronic repair shop can do it for you for couple dollars in 15 minutes (if you do not want to learn soldering.)

http://www.fixya.com/support/t281555-power_up

Posted on Jun 03, 2009

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See the other notes on this problem for bad caps C1260, C1261, and C1262 - most likely problem.

T Wiz

Posted on Mar 25, 2008

  • Techniwizard Apr 05, 2008

    OK, opened her up and the already noted 2 caps 680uf @ 10V, C1260 and C1261 showed signs of bulging out of their tops.
    C1262 is a 1000uf @ 10V on the same line after a decoupling coil.

    I replaced all 3 with 1000uf @ 16V units, powered up and all is well. The board was removed for more than 24 hours but I was shocked to find most of the TV Guide listings and my Scheduled Recordings still in memory along with all of the video on the HDD intact, so go figure.

    Also as noted, the DVD drive and front panel do not need to be removed as in the "Vass" procedure. The multi-pin jumpers from the mian board to the PS board can be disconnected on the PS side by lifting on "ears" of the upper part of the connectors with a fingernail. Do this slowly to not misalign the pins. This allows you to work on the caps with the board out of the unit on a workbench where you can see what you are doing.

    Keep track of the different screws as you remove them, some are machine type while others are self-tapping and can be easily mixed up.

    Thanks to those that first explored this problem. Reapirs are always easier when the diagnosis is already made.

    T Wiz

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  • 4,234 Answers

Replacing the control board seems a bit drastic. Usually there are simple component failures that can cause this. I have seen bad regulators, bad standby power supply circuits, and stuck buttons cause this. It may also be the microprocessor chip. Any of these problems can usually be fixed rather easily for less than $120 for parts and labor.
Dan

Posted on Mar 18, 2008

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See if anything here helps.

Limited range of your remote controls could be related to radio frequency interference that comes from something in your home or in the surrounding environment. Certain electrical devices can radiate interference; this could be almost anything that is plugged into an electrical outlet.


Please keep in mind that the device can be brand new, or can be an item that has been in use for quite a while. Also, the item may continue to function properly as far as you are able to tell. The only problem with the item may be that it has started to broadcast the interference, with no other symptoms noted.


Some devices are more likely to generate interference than others. This includes TV cable, cable amplifiers, surge protectors, fluorescent lights, battery charging devices (power tools, golf carts, etc.), anything that utilizes a timer (sprinkler systems, lights, alarm systems, etc.), and a myriad of others. If the problem seems sporadic, we can safely assume that the device responsible for the interference is only being operated during these times. Again, please keep in mind that the age of the device does not determine if it is capable of broadcasting unwanted interference. Any electrical device can be the source of the problem.


The first step is replacing the battery in your remote. If the range on your remote does not improve, remove the wall control wires from the overhead unit. If the range does not improve you will likely need to replace the remote control. After replacing the remote, or if you have other remotes programmed in to the opener, and the range problem still exists, please proceed to the Power Down test.


Multiple garage doors:
If you have two garage door units and one is working just fine, you will need to start by unplugging the good unit. This will help determine if the unit with no range starts to function properly. If the range comes back to the bad unit then you will need to replace the logic board on the unit that was unplugged as it is emitting an RF signal that is over powering the other garage door opener. If the range doesn not improve after the “good” unit has been unplugged, replace the batteries and try programming some additional remotes to determine if the existing remotes are the issue. If the extra remotes do not have any range then you would need to replace the receiver logic board in the “bad” unit.


Power Down test:
To isolate potential sources of interference, turn the circuit breaker off to the garage and plug the garage door opener into an extension cord from another room. If the range improves, then the interference is coming from a device in the garage. If no improvement is seen follow the same procedure, this time turning off the circuit breakers to your home, with the exception of the garage and test the remote controls. If improvement is noted, turn the circuit breakers back on, one by one, until the range problem resurfaces. This will allow you to narrow down what room the problem device is in. You will have to go from there to isolate it further, by unplugging and re-plugging the items in that room.


If you are unable to determine any source of interference, then the receiver logic board in the overhead unit will need to be replaced.



Feb 21, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The remotes including the keypad only work a few inches from the unit


Here is some info to check. Some will pertain and some will not.

Limited range of your remote controls could be related to radio frequency interference that comes from something in your home or in the surrounding environment. Certain electrical devices can radiate interference; this could be almost anything that is plugged into an electrical outlet.


Please keep in mind that the device can be brand new, or can be an item that has been in use for quite a while. Also, the item may continue to function properly as far as you are able to tell. The only problem with the item may be that it has started to broadcast the interference, with no other symptoms noted.


Some devices are more likely to generate interference than others. This includes TV cable, cable amplifiers, surge protectors, fluorescent lights, battery charging devices (power tools, golf carts, etc.), anything that utilizes a timer (sprinkler systems, lights, alarm systems, etc.), and a myriad of others. If the problem seems sporadic, we can safely assume that the device responsible for the interference is only being operated during these times. Again, please keep in mind that the age of the device does not determine if it is capable of broadcasting unwanted interference. Any electrical device can be the source of the problem.


The first step is replacing the battery in your remote. If the range on your remote does not improve, remove the wall control wires from the overhead unit. If the range does not improve you will likely need to replace the remote control. After replacing the remote, or if you have other remotes programmed in to the opener, and the range problem still exists, please proceed to the Power Down test.


Multiple garage doors:
If you have two garage door units and one is working just fine, you will need to start by unplugging the good unit. This will help determine if the unit with no range starts to function properly. If the range comes back to the bad unit then you will need to replace the logic board on the unit that was unplugged as it is emitting an RF signal that is over powering the other garage door opener. If the range doesn not improve after the “good” unit has been unplugged, replace the batteries and try programming some additional remotes to determine if the existing remotes are the issue. If the extra remotes do not have any range then you would need to replace the receiver logic board in the “bad” unit.


Power Down test:
To isolate potential sources of interference, turn the circuit breaker off to the garage and plug the garage door opener into an extension cord from another room. If the range improves, then the interference is coming from a device in the garage. If no improvement is seen follow the same procedure, this time turning off the circuit breakers to your home, with the exception of the garage and test the remote controls. If improvement is noted, turn the circuit breakers back on, one by one, until the range problem resurfaces. This will allow you to narrow down what room the problem device is in. You will have to go from there to isolate it further, by unplugging and re-plugging the items in that room.


If you are unable to determine any source of interference, then the receiver logic board in the overhead unit will need to be replaced.

Jan 17, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My remote will open the overhead door when I am standing inside garage, but not from outside


Limited range of your remote controls could be related to radio frequency interference that comes from something in your home or in the surrounding environment. Certain electrical devices can radiate interference; this could be almost anything that is plugged into an electrical outlet.


Please keep in mind that the device can be brand new, or can be an item that has been in use for quite a while. Also, the item may continue to function properly as far as you are able to tell. The only problem with the item may be that it has started to broadcast the interference, with no other symptoms noted.


Some devices are more likely to generate interference than others. This includes TV cable, cable amplifiers, surge protectors, fluorescent lights, battery charging devices (power tools, golf carts, etc.), anything that utilizes a timer (sprinkler systems, lights, alarm systems, etc.), and a myriad of others. If the problem seems sporadic, we can safely assume that the device responsible for the interference is only being operated during these times. Again, please keep in mind that the age of the device does not determine if it is capable of broadcasting unwanted interference. Any electrical device can be the source of the problem.


The first step is replacing the battery in your remote. If the range on your remote does not improve, remove the wall control wires from the overhead unit. If the range does not improve you will likely need to replace the remote control. After replacing the remote, or if you have other remotes programmed in to the opener, and the range problem still exists, please proceed to the Power Down test.


Multiple garage doors:
If you have two garage door units and one is working just fine, you will need to start by unplugging the good unit. This will help determine if the unit with no range starts to function properly. If the range comes back to the bad unit then you will need to replace the logic board on the unit that was unplugged as it is emitting an RF signal that is over powering the other garage door opener. If the range doesn not improve after the “good” unit has been unplugged, replace the batteries and try programming some additional remotes to determine if the existing remotes are the issue. If the extra remotes do not have any range then you would need to replace the receiver logic board in the “bad” unit.

Dec 12, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

1/2 hp craftsman garage door opener - suddenly lost signal from keyless, remotes, and vehicles - If I place the remote close to the motor, it will operate. Suspect weak signal strength (happened overnight)...


Here are some things to check:

Limited range of your remote controlscould be related to radio frequency interference that comes fromsomething in your home or in the surrounding environment. Certainelectrical devices can radiate interference; this could be almostanything that is plugged into an electrical outlet.

Please keep in mind that the device canbe brand new, or can be an item that has been in use for quite awhile. Also, the item may continue to function properly as far asyou are able to tell. The only problem with the item may be that ithas started to broadcast the interference, with no other symptomsnoted.

Some devices are more likely togenerate interference than others. This includes TV cable, cableamplifiers, surge protectors, fluorescent lights, battery chargingdevices (power tools, golf carts, etc.), anything that utilizes atimer (sprinkler systems, lights, alarm systems, etc.), and a myriadof others. If the problem seems sporadic, we can safely assume thatthe device responsible for the interference is only being operatedduring these times. Again, please keep in mind that the age of thedevice does not determine if it is capable of broadcasting unwantedinterference. Any electrical device can be the source of the problem.

The first step is replacing the batteryin your remote. If the range on your remote does not improve, removethe wall control wires from the overhead unit. If the range does notimprove you will likely need to replace the remote control. Afterreplacing the remote, or if you have other remotes programmed in tothe opener, and the range problem still exists, please proceed to thePower Down test.

Multiple garage doors:
If you have two garage door units andone is working just fine, you will need to start by unplugging thegood unit. This will help determine if the unit with no range startsto function properly. If the range comes back to the bad unit thenyou will need to replace the logic board on the unit that wasunplugged as it is emitting an RF signal that is over powering theother garage door opener. If the range doesn not improve after the“good” unit has been unplugged, replace the batteries and tryprogramming some additional remotes to determine if the existingremotes are the issue. If the extra remotes do not have any rangethen you would need to replace the receiver logic board in the “bad”unit.

Power Down test:
To isolate potential sources ofinterference, turn the circuit breaker off to the garage and plug thegarage door opener into an extension cord from another room. If therange improves, then the interference is coming from a device in thegarage. If no improvement is seen follow the same procedure, thistime turning off the circuit breakers to your home, with theexception of the garage and test the remote controls. If improvementis noted, turn the circuit breakers back on, one by one, until therange problem resurfaces. This will allow you to narrow down whatroom the problem device is in. You will have to go from there toisolate it further, by unplugging and re-plugging the items in thatroom.

If you are unable to determine anysource of interference, then the receiver logic board in the overheadunit will need to be replaced.


Nov 17, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The door will not open if i am standing 3or4 feet from door


Limited range of your remote controls could be related to radio frequency interference that comes from something in your home or in the surrounding environment. Certain electrical devices can radiate interference; this could be almost anything that is plugged into an electrical outlet.


Please keep in mind that the device can be brand new, or can be an item that has been in use for quite a while. Also, the item may continue to function properly as far as you are able to tell. The only problem with the item may be that it has started to broadcast the interference, with no other symptoms noted.


Some devices are more likely to generate interference than others. This includes TV cable, cable amplifiers, surge protectors, fluorescent lights, battery charging devices (power tools, golf carts, etc.), anything that utilizes a timer (sprinkler systems, lights, alarm systems, etc.), and a myriad of others. If the problem seems sporadic, we can safely assume that the device responsible for the interference is only being operated during these times. Again, please keep in mind that the age of the device does not determine if it is capable of broadcasting unwanted interference. Any electrical device can be the source of the problem.


The first step is replacing the battery in your remote. If the range on your remote does not improve, remove the wall control wires from the overhead unit. If the range does not improve you will likely need to replace the remote control. After replacing the remote, or if you have other remotes programmed in to the opener, and the range problem still exists, please proceed to the Power Down test.


Multiple garage doors:
If you have two garage door units and one is working just fine, you will need to start by unplugging the good unit. This will help determine if the unit with no range starts to function properly. If the range comes back to the bad unit then you will need to replace the logic board on the unit that was unplugged as it is emitting an RF signal that is over powering the other garage door opener. If the range doesn not improve after the “good” unit has been unplugged, replace the batteries and try programming some additional remotes to determine if the existing remotes are the issue. If the extra remotes do not have any range then you would need to replace the receiver logic board in the “bad” unit.


Nov 07, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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Check this link. I already rresponded to this problem before. You need some "soldering" to perfom. I already have the same problem twice, those slashes are typical sign for burnt out el. capacitors.
Here is the link to read for you:

http://www.fixya.com/support/t281555-power_up

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