halleffector
Member
Edit: For anyone new to the thread, circuit diagram is here (thanks to rmn_tech): http://www.scribd.com/doc/207782153/Dell-2407-WFP-Power-Supply-Rev-A11-Schematic-Diagram
I have an LCD with what appears to be a failed internal power supply.
I immediately identified a blown 0.22 ohm resistor. However, it was pointed out by ronsimpson in a different thread https://www.electro-tech-online.com...-where-can-i-salvage-one.149286/#post-1276833 (I created a new thread because this is a repair topic and the previous thread was just regarding the type of the resistor and where to salvage another one) there might be other components that caused this, so simply replacing the resistor might do nothing except ruin the second resistor.
Maybe the resistor is not needed just for testing? Maybe someone has some advice for how to bypass this part of the circuit to see if it will work without it? Or would that be foolish?
There were two resistors, only one had failed, I removed both. In the pictures below they are both missing but I have marked the locations where they are supposed to be in one of the pictures.
**broken link removed**
**broken link removed**
**broken link removed**
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**broken link removed**
**broken link removed**
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**broken link removed**
I have an LCD with what appears to be a failed internal power supply.
I immediately identified a blown 0.22 ohm resistor. However, it was pointed out by ronsimpson in a different thread https://www.electro-tech-online.com...-where-can-i-salvage-one.149286/#post-1276833 (I created a new thread because this is a repair topic and the previous thread was just regarding the type of the resistor and where to salvage another one) there might be other components that caused this, so simply replacing the resistor might do nothing except ruin the second resistor.
Maybe the resistor is not needed just for testing? Maybe someone has some advice for how to bypass this part of the circuit to see if it will work without it? Or would that be foolish?
There were two resistors, only one had failed, I removed both. In the pictures below they are both missing but I have marked the locations where they are supposed to be in one of the pictures.
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
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