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The Kuartlotron - keantoken's simple error-correction superbuffer
The Kuartlotron - keantoken's simple error-correction superbuffer
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Old 27th February 2017, 03:56 PM   #801
Project16 is offline Project16  France
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Are you sure you do not reverse a transistor reference or a wrong reference?
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Old 27th February 2017, 04:40 PM   #802
lacro is offline lacro  United States
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Quote:
Originally Posted by Project16 View Post
Are you sure you do not reverse a transistor reference or a wrong reference?
Please explain...
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Old 27th February 2017, 05:38 PM   #803
Destroyer OS is offline Destroyer OS  United States
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The Kuartlotron - keantoken's simple error-correction superbuffer
He probably means PNP instead NPN or vice versa.
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Old 27th February 2017, 06:04 PM   #804
Project16 is offline Project16  France
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Quote:
Originally Posted by Destroyer OS View Post
He probably means PNP instead NPN or vice versa.
Yes

Or two PNP instead NPN+PNP
etc...
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Old 27th February 2017, 09:50 PM   #805
lacro is offline lacro  United States
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Yes

Or two PNP instead NPN+PNP
etc...
I have both PNP (BC560C) on the left, and both NPN (BC550C) on the right.

I cut off the heat shrink holding the transistors face to face, and separated them. I checked them closely with high magnification, and none of the 4 appear damaged or burnt???

Thanks for your input,
Lacro
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Old 28th February 2017, 08:20 PM   #806
lacro is offline lacro  United States
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I pulled all the transistors, and they all test good with the DMM. Is it possible one or more of the caps are bad? There is no outward sign of bulging on them.
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Old 28th February 2017, 08:30 PM   #807
Project16 is offline Project16  France
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I do not know the pcb that you use but it may have an engraved inductor and you forgot the link that is on the +10V.
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Old 28th February 2017, 09:21 PM   #808
keantoken is offline keantoken  United States
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Good point.

Sorry I haven't been able to help so far, I have been preoccupied with fixing Frankenstein, my car. It's a victim of a bad engine swap. The wrong distributor is bolted on backwards, among other things. I just finished replacing the head gasket and the oil pan, and now I have to figure out how to get the crank pulley bolt off to change the timing belt.
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Old 28th February 2017, 09:37 PM   #809
brianco is offline brianco  Ireland
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I have copied and cleaned-up a picture from an earlier post.

Examine the polarity of the four elcos on each board.
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Old 28th February 2017, 10:28 PM   #810
jameshillj is offline jameshillj  Australia
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What sort of car is it?
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