WG6100 R11 resistor burning up

barakawins

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I'm working on this WG6100 and R11 burns up. I replaced it with a 10 ohm 1/2 watt resistor.
Schematics just show 10 at R11. See attached pic. Am I replacing with the correct value? Doesn't show what the wattage should be.
 

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I'm working on this WG6100 and R11 burns up. I replaced it with a 10 ohm 1/2 watt resistor.
Schematics just show 10 at R11. See attached pic. Am I replacing with the correct value? Doesn't show what the wattage should be.

Unless noted in the parts listing, resistors are 1/4 watt, so you should be safe with 1/2 watt. The 10 does mean 10 ohms.

Is your actual deflection board a P327 or a P314?

Scott C.
 
Did you check Q603? It may be bad. There also a diode near it that is possibly the problem. They put those diodes right near those big white power resistors, and they end up failing on a lot of boards I repair, due to taking the heat.

Also, when I replace the diodes, I mount them on the solder side of the board, to get them away from the heat.

Personally I wouldn't use a half watt there. Technically it will work, but if something in that circuit shorts (like Q603), you're going to have a bigger fireball on your hands, before it burns up and goes open.
 
I'm working on this WG6100 and R11 burns up. I replaced it with a 10 ohm 1/2 watt resistor.
Schematics just show 10 at R11. See attached pic. Am I replacing with the correct value? Doesn't show what the wattage should be.

I have had this same problem on an Amplifone
This portion of the circuits are almost the same between the 2 boards (Amp & WG6100)

It was the zener diode shorted
This zener is only present if your board has the Input protection board on a P314 board
It's the 5.1V zener on the IP board

When it shorts it causes R611 to burn, and Q600 to short too
I suggest you replace R611, R612, Q600 and the zener on the IP board

If you don't have an IP board, disregard this post
 
Upate

Ok.. So, I checked Q603, Q604, Q703 an Q704 out of circuit with a meter in diode test.
There are no issues there. I also changed out R611 as it flamed on power on. R612 changed out and Q600 checked with meter in diode test and found to be fine. R602 is changed. I don't have an IP board so I there is no zener to replace. D602 was checked out of circuit and is
fine. Any other ideas? I didn't put the board back in but can't seem to find what could cause R611 to smoke.
 
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