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afterdawn.com > forums > home theater > receivers and amplifiers > trying to identify a blow diode on a insignia ns-r5101hd
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Trying to identify a blow diode on a Insignia NS-R5101HD
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dnuke88
Newbie
_ 		20. October 2012 @ 07:19 _ Link to this message    Send private message to this user   
The Receiver is a Insignia NS-R5101HD receiver. it turns on but only stay on for few seconds then goes to standby. i checked all the caps and replaced the main transistors but it was still the same and then looking closely on another PCB attached to the main board i found a brnt diode (i mean to a crisp) its a smd diode and i couldnt make out any marking and im trying to figure out what that diode might be to replace it i searched all over for a schematic and even emailed insignia tech support still no help so any one have an idea what it might be can i replace it with a common 1n4001 from radioshack
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dnuke88
Newbie
_ 		20. October 2012 @ 07:23 _ Link to this message    Send private message to this user   
i do have images but they wont let me post but the diode is right below a 153 smd resistor
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JST1946
Senior Member
_ 		20. October 2012 @ 07:51 _ Link to this message    Send private message to this user   
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20 Year U.S.Army Veteran.Vietnam 1969-1972 101st Abn.Div.
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aldan
Senior Member
_ 		20. October 2012 @ 23:58 _ Link to this message    Send private message to this user   
Originally posted by dnuke88:
 The Receiver is a Insignia NS-R5101HD receiver. it turns on but only stay on for few seconds then goes to standby. i checked all the caps and replaced the main transistors but it was still the same and then looking closely on another PCB attached to the main board i found a brnt diode (i mean to a crisp) its a smd diode and i couldnt make out any marking and im trying to figure out what that diode might be to replace it i searched all over for a schematic and even emailed insignia tech support still no help so any one have an idea what it might be can i replace it with a common 1n4001 from radioshack
to test the diode you need a multimeter with a continuity function.since a diode only lets current flow one way,when you hook the red lead to one end and the black lead to the other either you will get a tone or not.reversing the leads will do the same.im sorry if this is hard to understand but suffice it to say that if the diode is good you will get a tone with the leads hooked up one way but not the other.if you get a tone both ways or not at all it is cooked.damn,took longer to explain it than test it.lol.
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