L1 and D1 burned up, L1 marking is 102, I'm guessing 1000uH but I don't know what replacement I can use.
Diode marking is
A4
VD05
Thanks for any info!
Diode marking is
A4
VD05
Thanks for any info!
Attached Files
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Re: Need help ID'ing 2 components please!
It looks like L1 & L1A are 2 coils (or a transfomer) in one package? input choke of some kind
Is that a dc input jack?
The diode looks like it is for reverse polarity protection for the LM317
I see some SOD-123 diodes marked A4 like the Vishay 1N4150W
or maybe this Rectron FM4004W-T (1 amp 400 volt)Last edited by R_J; 10-19-2017, 04:58 PM. -
Re: Need help ID'ing 2 components please!
what happened ? all i can guess it was wrong charger and wrong fuse too . why no fuse on the board i wonder ?Comment
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Re: Need help ID'ing 2 components please!
This is a friend's water softner controller. Looks like a surge blew the transformer, a 12VAC output. Is that coil necessary?Comment
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Re: Need help ID'ing 2 components please!
Any of these? I don't see the Rectron FM4004W-T
http://www.mouser.com/Search/Refine.aspx?Keyword=FM4004Last edited by kevinm34232; 10-19-2017, 05:56 PM.Comment
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Re: Need help ID'ing 2 components please!
So the power jack on that board is fed by 12VAC or 12VDC?
That is the common mode choke (it does not look like center pin on the right is used), the circuit will function without (bypassed) it, but is there any protection such as fuse any where on the primary side of the Transformer?
Can you do straight shot pictures of the whole board and how the board is connected to other boards/ components?Last edited by budm; 10-19-2017, 09:44 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: Need help ID'ing 2 components please!
any of those fm4004w should work, or anything similar, it's not that special, that coil has 5 leads, where do they go? looks like 2 leads connect to the jack 1 connects to the diode. Is the coil actually bad? I would leave the coil alone and just replace the diode to start with.Comment
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Re: Need help ID'ing 2 components please!
BTW, looking at the pictures, I cannot see any burnt mark on D1.
The output side of L1A (that choke has two windings, L1 and L1A) connected to the Cathode of D1, it also feed the VIAs that goes to the bottom side of the board.Last edited by budm; 10-19-2017, 10:49 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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I have 1 diode on a circuit that I suspected to be faulty because the forward and reverse bias has a voltage drop reading.
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Photo attached,
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