hello everyone I have a problem with the receiver of this microphone which is a sennheiser ew100 / G2, attached the photo of the main board and the service manual of the receiver, and I'll put the youtube link for the video of the problem I don't know if it is a power problem, for the moment I realized that the power supply should bring out 13VDC but almost 19 come out, it is not a display problem, because when it starts doing this problem (after a few seconds) the transmitter stops working. I await your advice thank you
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Sennheiser Ew100/G2 Wireless Mic Receiver
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Re: Sennheiser Ew100/G2 Wireless Mic Receiver
Originally posted by falcontech View Posthello everyone I have a problem with the receiver of this microphone which is a sennheiser ew100 / G2, attached the photo of the main board and the service manual of the receiver, and I'll put the youtube link for the video of the problem I don't know if it is a power problem, for the moment I realized that the power supply should bring out 13VDC but almost 19 come out, it is not a display problem, because when it starts doing this problem (after a few seconds) the transmitter stops working. I await your advice thank you
The service manual page 5 shows DC input jack rating of 10.5 ~ 16V 200mA, nominal is 12V.
Show us the pictures of the AC adapter you are using.Last edited by budm; 07-27-2020, 10:52 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
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Re: Ricevitore microfono wireless Sennheiser Ew100/G2
Originally posted by stj View Postcan you open that, or is it glued shut?
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Re: Sennheiser Ew100/G2 Wireless Mic Receiver
It is not regulated power supply so the output will be higher than 13V without load, it will be 13V with 250mA load.
What Voltage do you get at the dc jack when the unit is turned on?
There are many power supplies on that receiver unit, look at page 14, 15, 19, 20 of the service manual, it shows you the Voltage test points that you need to check. Did you check them?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: Sennheiser Ew100/G2 Wireless Mic Receiver
Originally posted by falcontech View PostI disassembled the 78m08 voltage regulator, and I am waiting for the new one to be replaced to replace it, I keep you updatedNever 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: Ricevitore microfono wireless Sennheiser Ew100/G2
Originally posted by budm View PostWhat are the input and output Voltages you are getting on this +8V regulator?
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Re: Sennheiser Ew100/G2 Wireless Mic Receiver
You should be able to test the input and output Voltage easily, you should also check the resistance of the output to see if it shows very low Ohms or not, nothing special or hard about doing simple test.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: Sennheiser Ew100/G2 Wireless Mic Receiver
Originally posted by falcontech View PostI tested the voltages, I realized that at the input of this resettable fuse I have 16 volts at the input and then at the output I have 8.5 volts do you think this could be the problem?
Unplug the DC jack and let the fuse cool down then check the resistance of the fuse.
Also check the resistance of that black cylinder device connected to that fuse also.Last edited by budm; 08-05-2020, 03:54 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: Sennheiser Ew100/G2 Wireless Mic Receiver
[QUOTE=falcontech;979358]on the fuse the acronym is x075f 24v, that cylindrical part I did not understand what component it is if you can give me a hand through service manual I would be grateful[/QUOTE]
1) That black component is a protection diode D210 (SM4007) in case the unit is connected to the wrong polarity of the AC/DC adapter. So check the RESISTANCE as I requested.
2) Fuse F210 (X075F 24V) is rated at 0.75A per schematic. Did you check the resistance (no power applied to the unit for at least 10 minutes) as I requested?
3) You must follow my instructions when I request you to do the measurement otherwise we are just wasting times here.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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