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Need Help Idnetifying a Component
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Re: Need Help Idnetifying a Component
May be this one: ZD (W = China)
https://cdn.badcaps-static.com/pdfs/...91a6652c2a.pdf
Test it to see if it shows as PNP transistor or not.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=24809
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Re: Need Help Idnetifying a Component
Can we see the pictures of the board so we may be able to figure out the function of this device?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=24809
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Re: Need Help Idnetifying a Component
On a corsair cx600 powersupply-see arrow (Q10): https://postimg.cc/qgxkNV0D
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Re: Need Help Idnetifying a Component
Also found 2n4125...but the package and SMD ID book are both wrong. PBSS5350T makes sense but the voltage on the primary side can reach around 350v dc What does the 38 suggest on it...anyone know?
The two terminals sharing the same side are being provided with .46v and the top pen 0v by the pcb. The main cap is charging to 168vdcLast edited by ShortCircuited; 03-23-2020, 09:12 PM.
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Re: Need Help Idnetifying a Component
The 38 is a date code, just because you can get 350v on the primary side does'nt mean that potential is applied to this transistor. The transistor could be used in the feedback circuit or even used as a switch to control whatever is connected to it's collector.Last edited by R_J; 03-23-2020, 09:54 PM.
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Re: Need Help Idnetifying a Component
You can trace out the Collector pin to see if it is connected through other component that ending up connected to the circuit ground or positive power supply then you can tell if it is NPN or PNP Transistor; same tracing for the Emitter pin.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=24809
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Re: Need Help Idnetifying a Component
Originally posted by R_J View PostThe 38 is a date code, just because you can get 350v on the primary side does'nt mean that potential is applied to this transistor. The transistor could be used in the feedback circuit or even used as a switch to control whatever is connected to it's collector.
ZD are the only letters designating this component? W appears to indicate country of manufacture.Last edited by ShortCircuited; 03-23-2020, 10:54 PM.
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Re: Need Help Idnetifying a Component
Red rectangular = MICA capacitor
Three PBA 3002/6 = 75 Ohms resistors (marked as 2 = 75 Ohms) arrays, you can check the resistance.
Four PBRxxxc = Resistor array/network
Two Black disc = may be Thermistor, check the resistance when it is cold and when it is heated up with hair dryer.Last edited by budm; 03-24-2020, 02:38 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=24809
Comment
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Re: Need Help Idnetifying a Component
Nearly everything I probe on primary side is 168vdcLast edited by ShortCircuited; 03-24-2020, 06:42 PM.
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Re: Need Help Idnetifying a Component
What did you use for Ground ref for your meter probe when you measure Voltage on the hot side?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=24809
Comment
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Re: Need Help Idnetifying a Component
Originally posted by budm View PostRed rectangular = MICA capacitor
Three PBA 3002/6 = 75 Ohms resistors (marked as 2 = 75 Ohms) arrays, you can check the resistance.
Four PBRxxxc = Resistor array/network
Two Black disc = may be Thermistor, check the resistance when it is cold and when it is heated up with hair dryer.
101 should be 100pf but voltage?Last edited by OniJon; 03-24-2020, 08:11 PM.
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Re: Need Help Idnetifying a Component
In OP's CX600 pic I see fractured soldering joints to a through-hole capacitor (at ZD2 pads) that connects to Q10. Did you fix that? Is the +5VSB alive?
OMG this is full of CapXon. The little daughter board uses PFC controller CM6800.
some CX600 pc board pics:
https://www.techpowerup.com/review/c...-cx600m/4.html
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Re: Need Help Idnetifying a Component
Originally posted by OniJon View PostResistor networks/arrays I was aware but had to check, thanks. How do I know mica's capacitance/voltage values because my esr meter goes only down to 1uf reliably? I tried to google the text on top of them with no results.
101 should be 100pf but voltage?
https://technifest.com/technical-doc...pacitor-codes/Last edited by budm; 03-24-2020, 08:21 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=24809
Comment
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Re: Need Help Idnetifying a Component
Originally posted by budm View PostWhat did you use for Ground ref for your meter probe when you measure Voltage on the hot side?
*EDIT: retest gets .41vdcLast edited by ShortCircuited; 03-24-2020, 10:35 PM.
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Re: Need Help Idnetifying a Component
Originally posted by redwire View PostIn OP's CX600 pic I see fractured soldering joints to a through-hole capacitor (at ZD2 pads) that connects to Q10. Did you fix that? Is the +5VSB alive?Last edited by ShortCircuited; 03-24-2020, 10:45 PM.
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