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I have an intermittent fault, suspect dry joint or loose board, how do i get the cover off!!?

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1 Answer

When I turn up my music the protector .turns off recover. Why


Please check for loose connection, dry joints or even loose connectors in the main board. Tap and see if the same fault repeats.If so remove cover and attempt to solder the suspected areas in the power amplifier section

Mar 14, 2012 | Sony Audio Players & Recorders

1 Answer

Tv comes on but no picture or sound


Possible failure of the main board or power supply but there is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance. The best way to check for loose connections is to tap lightly when the set is powered on, if there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, and use a good soldering iron to solder all suspected points. Sometimes the fault occurs when the set warms up; if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault. It can also be related to WEAK ELECTROLYTIC capacitors as the value can reduce in time. Based on the above method you must be able to locate the area of fault and solder the sections

Oct 18, 2011 | Olevia LT37HVS 37 in. LCD HDTV

2 Answers

Panasonic Viera TH-50PZ85U- will intermittely not power on and red power LED blinks twice. If I allow the set to cool of, it powers back on fine.


This is a common fault solution which can be checked and corrected by you assuming that there is no component failure. There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Check for tips to look into the SMPS unit with some of my tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Thank you for using Fixya.


Aug 09, 2011 | Panasonic Televison & Video

1 Answer

The screen suddenly blinks while watching


There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints on the main board.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol.

Jul 20, 2011 | LG 32LG30 32 in. LCD HDTV

1 Answer

The tv is just black and the power is on with no sound


There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that has shut the main board specially on the SOUND SECTION..

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Check for tips to look into the SMPS unit:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Jul 20, 2011 | Sanyo DP42746 42 in. Plasma Television

1 Answer

Screen is half above half portion is showing picture but not with good quality and lower half portion is blank


There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you the lower width on the screen. Check the T COn board .

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Check for tips to look into the SMPS unit:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Jul 20, 2011 | Televison & Video

1 Answer

POWER LIGHT COMES ON BUT SCREEN IS BLACK AND NO SOUND


This is can be due to poor connections in case the set works on some occasions. If not the main board is a suspect. There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Jul 14, 2011 | Dell W5001C 50 in. Plasma HDTV

1 Answer

Philips plasma television began intermittently blacking out after being left on 24 hours a day for approximately 3 years.(maybe exaggerating just a little) What can I do to fix the problem? In the short...


This is a common fault as the set on ageing deteriorates in the connections. There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Jul 14, 2011 | Philips 42FD9954 42 in. Plasma HDTV

1 Answer

My LG M2362D keeps turning off automatically while I'm on the computer and then comes back on again within 10secs. Why does this happen intermittently?


Check the monitor cord to the PC, tighten them as also check the mother board for any loose connections. If possible try with an another monitor to confirm that the fault is with the monitor or not. If so open the monitor after disconnection of mains and solder all the suspected joints , seen to look dry. Check for loose components, capacitors, IC or resistor that detach the soldering connection when it is hot.

Jan 21, 2011 | LG M2362D 23 in. LCD TV

1 Answer

My picture keeps blinking in and out! Sound is uninterrupted. What is the problem?


Possible that this shunting is due to intermittent fault in the mother board. make sure all connectors are plugged in to fit and there are no loose joints and dry soldering joints.
If so make a quicj touch up soldering on suspected points to check up.

Sep 28, 2010 | Samsung SlimFit TX-S2783 TV

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