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Post by tibimakai on Feb 10, 2015 21:33:39 GMT -5
Thank you, for that. I will study them.
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Post by tibimakai on Feb 10, 2015 1:10:23 GMT -5
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Post by tibimakai on Feb 10, 2015 1:05:08 GMT -5
The 2SA1507 would work in place of the TTA004B? The other question it would be, which Hfe should I have, there are two versions, one with 100 and the other is 200.
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Post by tibimakai on Feb 10, 2015 0:38:21 GMT -5
Off topic, I have found some bad transistors in the Obkyo and I can't find them anywhere. They are TTA004B(A004B), INA6006AP1(BF81W) and INC6006AP1(BE96W). Do you know by any chance, where can I find these, or with what else I could replace them? Thank you, Tibor.
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Post by tibimakai on Feb 9, 2015 23:33:23 GMT -5
It drops to 0.024V.
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Post by tibimakai on Feb 8, 2015 14:56:48 GMT -5
Sorry about the late response, but I had other more important things to do. Here are the measurements from those pins: Pin #41: 4.761V, #42: 0.001V, #43: 0.002V, #44: 0V, #45: 0V. At pin #58, when it is on, I measure 4.814V. When it is off, I measure 4.869V(?!). I have picked up an Onkyo TX-NR636, with chk sp wire, issue. Blown final transistors. 5W resistor and some other components on the pre-amp section.
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Post by tibimakai on Feb 5, 2015 1:27:14 GMT -5
You were right, it was my mistake there. It is 4.819V.
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Post by tibimakai on Feb 4, 2015 0:20:43 GMT -5
OK, here they are: Pin # 2= 4.823V, #3= 4.822V, #8= 4.844V, #9= 4.801V, #14= 4.844V, #17= 4.843V, #18= 4.843V, #19= 4.843V, #20= 4.843V, #21= 0.001V, #40= 4.845V, #45= 0V, $55= 4.845V, #58= 4.825V, #64= 4.743V, #70= 4.825V, #71= 4.872V, #72= 4.219V, #78= 0.001V, #80= 4.864V, #81= 5.018V, #82= 4.802V, #83= 4.825V, #84= 0.001V, #85= 0.001V, #86= 4.826V, #87= 4.846V, #89= 4.846V I have slipped only once, it turned off. I have restarted and continued. I had to work, under magnifying lamp and very small tip probes.
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Post by tibimakai on Feb 2, 2015 21:28:55 GMT -5
Can't do it today, my back it's hurting.
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Post by tibimakai on Feb 2, 2015 1:18:32 GMT -5
Interesting, I did not get notification about your post. I will measure these, tomorrow.
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Post by tibimakai on Jan 31, 2015 14:56:30 GMT -5
I'm in Los Angeles/Monrovia. I can take it apart, no problem. I already did some measurements on that board around the CPU. There is the reset IC as well. VSX60, is pretty much the same thing, it just has some extra stuff, since it's a higher trim model.
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Post by tibimakai on Jan 30, 2015 11:18:43 GMT -5
I'm still here.
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Post by tibimakai on Jan 27, 2015 17:44:41 GMT -5
Any news?
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Post by tibimakai on Jan 23, 2015 23:57:59 GMT -5
The first one shows 12V= 13.83V The second is: High is 60.55V Low is -60.55V
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Post by tibimakai on Jan 23, 2015 11:25:56 GMT -5
That situation, it was valid for the holidays, now I'm here. Afternoon, I will take these measurements. Thanks
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