SOLVED !! internals of the auto lamp module Reply #60 – January 13, 2013, 12:46:37 AM trinom,, when you get back, clear you mind for a moment and just think about this from my perspective.the reason for the fault is a tried test on the auto lamp relays that resulted in my sending 12v "IN" to the middle connection called "RELAY OUTPUT".This would have been direct battery current going into the board on a circuit that was designed to be an output.The very first thing that would have taken this unfortunate hit would have been Q2 collector.does this help any? i was never really certain you understood how i got here but thats the story.I keep thinking that q1 adn q2 both were not reading correct and when i put in a replacement pnp & npn general purpose transitor, i keep thinking that this is not the corret type transitor.better yet, i keep thinking q2 is more than an npn , it may be another type because my resistance readings were not like what i would expect with your typical transitor where it was blown or defective.have you had a chance to dig into your electronics resources to cross ref what a 48-2 and a 48.10 transitor is? also, you did notice your simulator q2 is a transitor with a heat sync? Quote Selected
SOLVED !! internals of the auto lamp module Reply #61 – January 13, 2013, 01:16:43 AM hey, please tell me there is a jumper where my arrow points...?if not then ok,, but if you have a jumper there on the board, i dont have one so maybe it got blown out. Quote Selected
SOLVED !! internals of the auto lamp module Reply #62 – January 13, 2013, 05:35:04 AM Quote from: jcassity;4067712.5 V with full light from my garage. .3 V with complete darkness on the point you have shownThat's weird, it should be ON the whole time. Please check the voltage at pin 12 of the chip. Is it the same or not? It should be. Quote from: jcassity;406779This is starting to become a tad frustrating , especially not knowing what these two transistors are even though you said they are good on my board. they are 48-2 and 48.10I don't know what type exactly they are, because they used nick named transistors. Quote from: jcassity;406793the reason for the fault is a tried test on the auto lamp relays that resulted in my sending 12v "IN" to the middle connection called "RELAY OUTPUT".This would have been direct battery current going into the board on a circuit that was designed to be an output.The very first thing that would have taken this unfortunate hit would have been Q2 collector.also, you did notice your simulator q2 is a transitor with a heat sync? Well, if your module had a battery power hooked up at the time of the accident, I think it should survive without any problem. Also the voltage from the battery is too low to damage the transistor.Again, please don't care about the transistors in simulation. Quote from: jcassity;406794please tell me there is a jumper where my arrow points...?It's not a jumper, it's a pin from the transistor. It doesn't touch any other pins. It's just an optical illusion due to the camera angle.Let's move on. I think you have a problem in the buttstuffog part of the circuit. Quote Selected
SOLVED !! internals of the auto lamp module Reply #63 – January 13, 2013, 11:20:17 AM IC pin 12 acts the same as the bonding area of C1 & C2.voltage goes up with increaded light and it seems to top out at 2.7v if i wait long enough.voltage goes down with decreased light and it seems to go to nearly zero volts.you said in post 57 that the area bonding c1 & c2 should be changing with light intensity and it is.you said pin 12 should be acting the same, and it is.. what is wierd?**to move a little quicker, tell me what time "eastern standard time" to be here and i will do it.as soon as you ask for a reading i will react and reply within a minute or two.or i will have to figure out how to get skype running on my laptop or my iphone. Quote Selected
SOLVED !! internals of the auto lamp module Reply #64 – January 13, 2013, 12:07:23 PM What's weird? The top value at the test pad should be higher, than 2.7V. But in that case it should be still turned on. Can you send me the values on the chip once again please?You are six hours behind us (I live in GMT+1 time zone). I will be here for next six hours or so. Here is the link for skype for iphone - http://www.skype.com/intl/en-us/get-skype/on-your-mobile/download/iphone-for-skype/ Quote Selected
SOLVED !! internals of the auto lamp module Reply #65 – January 13, 2013, 12:45:56 PM ok,,sorry,,, here i go to post results,, will set up skype later........ sorry i missed your post ,, im watching now.in 5min i will have chip set values. and my circuit card will be in a simi dark situation in my garage. I am not outside where there is currently daylight, this means the values on pin12 will reflect such. Quote Selected
SOLVED !! internals of the auto lamp module Reply #66 – January 13, 2013, 12:58:12 PM the below pic shows my readings as they are now. pin 12 varies so you know that.where i have a zero, the reading is 0,1 (nearly nothing).so the readings are the same as before. Quote Selected
SOLVED !! internals of the auto lamp module Reply #67 – January 13, 2013, 01:05:56 PM OK, the output (pin 4) is in ON state. That's correct. Does it drop to zero if you throw light on the sensor (after half a minute or so)? Quote Selected
SOLVED !! internals of the auto lamp module Reply #68 – January 13, 2013, 01:12:36 PM yes, pin 4 drops to zero with light applied to sensor.returns to the 5v range with darkness Quote Selected
SOLVED !! internals of the auto lamp module Reply #69 – January 13, 2013, 01:23:24 PM Perfect. That means, that your chipset works fine, as I mentioned earlier. Also the buttstuffogue part works correctly. You really must have some issue at the output stage. Quote Selected
SOLVED !! internals of the auto lamp module Reply #70 – January 13, 2013, 01:26:27 PM oh,, now i see what you mean now, i missed that. even channel 4 will prove out fine based on the jumpers i see. Quote Selected
SOLVED !! internals of the auto lamp module Reply #71 – January 13, 2013, 01:46:46 PM So we should move back to the end stage. Here is the complete end stage schematic.Please check the Q1 base voltage once again and R6 voltage as well. Both for dark and bright conditions. Quote Selected
SOLVED !! internals of the auto lamp module Reply #72 – January 13, 2013, 01:52:31 PM want me to check the cap C3 to see if its shorted? Quote Selected
SOLVED !! internals of the auto lamp module Reply #73 – January 13, 2013, 01:54:24 PM sorry, didnt see your next step below the diagram,, getting data now Quote Selected
SOLVED !! internals of the auto lamp module Reply #74 – January 13, 2013, 02:19:13 PM q1 base dark = 0,7vq1 base light = 0,5vr6 on either side remained the same at 0,1v in both dark or light conditions. Quote Selected
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