I have a Diode marked T2D 85 It came out of a Magnavox power supply and test open both ways. But I can't seem to find information on it to replace it.
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Re: Identify this Diode
Close up picture?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: Identify this Diode
Here is a photo of the diode. Also, can someone tell me what this glass thin is. It says SA1 on the circuit board, is it a resistor?Attached FilesComment
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Re: Identify this Diode
That is used as a clamping or an avalanche diode, It will always test open.
It is probably fine.
SA1 is a Zener diode.Comment
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Re: Identify this Diode
The SA1 test open also, is that normal?Comment
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Re: Identify this Diode
zener should test open one way and closed the other, are you using diode mode on your DMM?Comment
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Re: Identify this Diode
SA1 looks like Gas Discharge for surge protection. It's sitting next to those blue X/Y Safety caps.
T2D 85 is similar construction as shown in PDF, it has back to back diodes inside.Last edited by budm; 11-15-2012, 01:56 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Identify this Diode
I am using the diode test on a DMM and both diodes test open in both directions. I found and replaced 3 bad mosfets on the power supply, but still not getting stand by voltage.Comment
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Re: Identify this Diode
Can we see the picture of this power supply (both side of the board) and where the Diode is, the T2D 85 is probably part of the snubber circuits.
The SA1 gas tube will read open, pictures of the bottom side of this diode location?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Identify this Diode
did you change the start up caps? or test them?
Budm, I believe you are right about the gas discharge, I just have not seen one like that. Looks like a axial cap symbol on the board :S
But I am a noobLast edited by IamCanadian; 11-15-2012, 02:49 PM.Comment
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Re: Identify this Diode
I tested the caps in circuit with an ESR meter
I get photos in the AMComment
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Re: Identify this Diode
I would do ESR testing outside the circuit.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Identify this Diode
OK will try that, I'll take the caps out then test them.
Thanks everyoneComment
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