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Author Topic: need help with electronics repair (non-taper content)  (Read 3075 times)

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Offline jerryfreak

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need help with electronics repair (non-taper content)
« on: March 16, 2011, 06:28:59 PM »
sorry for the off-topic, dunno where else to post misc electronics questions, as this is by far the techiest section of the forum

ok so i have a kerosene shop heater with a bad board. the ignitor went and took a surface mount resistor on the control board with it. The only marking on the resistor is 'DALE R1F'. From what i gather R1F is the resistor series but doesnt tell me the resistance or wattage. This board is like $100 and id like to try to fix it

here is the patent for that board with some schematics and descriptions

http://www.freepatentsonline.com/5470223.pdf

see R15 in figure 2A.  Thats the blown resistor its not specifically described in the text (from what i saw) but it does describe the IC1 microprocessor it is connected to as a ST6210. Datasheet might be found here:

http://www.datasheetarchive.com/ST6210-datasheet.html

hopefully someone can help me figure out the size of this resistor, i dont know, other than getting an assortment of resistors and starting with a high wattage high resistance one and swapping them with lower resistance values until it works. Any clues? if i desolder this maybe there is some more size markings on the back?
in:
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Offline Church-Audio

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Re: need help with electronics repair (non-taper content)
« Reply #1 on: March 16, 2011, 08:03:15 PM »
sorry for the off-topic, dunno where else to post misc electronics questions, as this is by far the techiest section of the forum

ok so i have a kerosene shop heater with a bad board. the ignitor went and took a surface mount resistor on the control board with it. The only marking on the resistor is 'DALE R1F'. From what i gather R1F is the resistor series but doesnt tell me the resistance or wattage. This board is like $100 and id like to try to fix it

here is the patent for that board with some schematics and descriptions

http://www.freepatentsonline.com/5470223.pdf

see R15 in figure 2A.  Thats the blown resistor its not specifically described in the text (from what i saw) but it does describe the IC1 microprocessor it is connected to as a ST6210. Datasheet might be found here:

http://www.datasheetarchive.com/ST6210-datasheet.html

hopefully someone can help me figure out the size of this resistor, i dont know, other than getting an assortment of resistors and starting with a high wattage high resistance one and swapping them with lower resistance values until it works. Any clues? if i desolder this maybe there is some more size markings on the back?


Call the company and ask what R15 Is if they wont tell you tell them you will never buy a product from them again.
for warranty returns email me at
EMAIL Sales@church-audio.com

Offline jerryfreak

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Re: need help with electronics repair (non-taper content)
« Reply #2 on: March 16, 2011, 10:21:02 PM »
thanks its 5.0 x 2.5 mm so it looks like WSL2010 series if any

how did you conclude the numbers you came up with and this WSL series as a match?



Probably this, a 0.1 ohm 1% current sense resistor, check the size against this datasheet:

http://www.vishay.com/docs/30100/wsl.pdf
in:
small: MK4/4V > CMR > V3 or J.Williams Mod MicMan Jr or no pre at all >AD2K/R07/PCM-A10/Oade Warm 661/DR100-MKIII

smaller: 4061/4099 CORE or 4011/4018V> d:vice MMA



out:
home:Benchmark DAC1 HGC > Dynaudio BM15A active monitors
shop: Musical Fidelity VLink 192 Asynchronyous> coax> DAC1 > Rokit RP8 active monitors

Offline jerryfreak

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Re: need help with electronics repair (non-taper content)
« Reply #3 on: March 16, 2011, 10:53:48 PM »
well this board is already junk, whats the worst that can happen, i blow the resistor again? so basically i just get any old 0.5W 0.1 ohm surface mount and go for it?
in:
small: MK4/4V > CMR > V3 or J.Williams Mod MicMan Jr or no pre at all >AD2K/R07/PCM-A10/Oade Warm 661/DR100-MKIII

smaller: 4061/4099 CORE or 4011/4018V> d:vice MMA



out:
home:Benchmark DAC1 HGC > Dynaudio BM15A active monitors
shop: Musical Fidelity VLink 192 Asynchronyous> coax> DAC1 > Rokit RP8 active monitors

Offline Church-Audio

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Re: need help with electronics repair (non-taper content)
« Reply #4 on: March 17, 2011, 08:22:05 AM »
well this board is already junk, whats the worst that can happen, i blow the resistor again? so basically i just get any old 0.5W 0.1 ohm surface mount and go for it?

its pretty rare to blow a resistor for no reason. I would suspect something is causing it to blow... I would suspect that there are other issues besides that resistor. Good luck sounds like John has figured out the right size.
for warranty returns email me at
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Offline jerryfreak

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Re: need help with electronics repair (non-taper content)
« Reply #5 on: March 17, 2011, 09:30:24 PM »
well this board is already junk, whats the worst that can happen, i blow the resistor again? so basically i just get any old 0.5W 0.1 ohm surface mount and go for it?

its pretty rare to blow a resistor for no reason. I would suspect something is causing it to blow... I would suspect that there are other issues besides that resistor. Good luck sounds like John has figured out the right size.

yes, as i said, "the ignitor went and took a surface mount resistor on the control board with it. ". has since been replaced
in:
small: MK4/4V > CMR > V3 or J.Williams Mod MicMan Jr or no pre at all >AD2K/R07/PCM-A10/Oade Warm 661/DR100-MKIII

smaller: 4061/4099 CORE or 4011/4018V> d:vice MMA



out:
home:Benchmark DAC1 HGC > Dynaudio BM15A active monitors
shop: Musical Fidelity VLink 192 Asynchronyous> coax> DAC1 > Rokit RP8 active monitors

Offline Church-Audio

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Re: need help with electronics repair (non-taper content)
« Reply #6 on: March 18, 2011, 02:20:31 PM »
well this board is already junk, whats the worst that can happen, i blow the resistor again? so basically i just get any old 0.5W 0.1 ohm surface mount and go for it?

its pretty rare to blow a resistor for no reason. I would suspect something is causing it to blow... I would suspect that there are other issues besides that resistor. Good luck sounds like John has figured out the right size.

yes, as i said, "the ignitor went and took a surface mount resistor on the control board with it. ". has since been replaced
Never mind  :-[
for warranty returns email me at
EMAIL Sales@church-audio.com

 

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