Working on Pyle PLDN70U - 7" Touchscreen Head Unit - anyone have drawings/schemes?
I'm looking for drawings/schematics for a Pyle PLDN70U 7" touch screen head unit, anybody have info? The boards have some numbers on them: DV7831-M4 - dvd board DV7700-K1 v0.1 - sd card board DV7700-A3-V1 - radio,amplifier board (has microprocessor too) I googled 'em, found them in some units made by 'Mystery'? They seem to be really close, but things like connector location, etc, seem off on some of the schemes. So, I'm thinking Pyle just rebadges these, so if I could find the original manufacturer that would help too right? Some one please let me know if I am not supposed to ask this there... Here's the scenario: Working on this Pyle PLDN70U, client blew it up (probably ran at max volume til chip amp overheated and shorted, blowing switching supply - replaced blown diode and exploded capacitor, also turn-on trace burned off of board lol)... OK, so have it up and running, all chips have correct voltages, it plays dvds, radio comes on , screen displays fine, but touchscreen isn't working. Knowing client dropped it (obvious, but 'doesn't know anything about that') checked the touch panel itself, ok, followed wires, leads, and traces, signal appears to get to the touchscreen chip, which I'm guessing outputs the touchscreen data on the I2C line, is this correct? SCL,SDA blip when I touch the screen, so it appears its happening to that point, I will setup pc-scope later to verify changing/consistent I2C data when I touch the screen in different corners change. So I'm trying to follow it, but its just spaghetti. I monitored the I2C at the microprocessor but didn't see anything, but the mcpu is on the radio/amp board, and theres a lot of other logic on the dvd board.. It's a neat little unit, has rear camera video, parking brake interlock, lots of ins and outs, etc. Chip amp is the weak link, as they claim 10 times the wattage it can produce on a 14.4 system, lol. And of course the target market goes 'oooo cheap and 300 hundred watts!!!'. And turns it up until the heatsink paste turns black (not kiding you...) Thanks for your help folks...
I'm looking for drawings/schematics for a Pyle PLDN70U 7" touch screen head unit, anybody have info? The boards have some numbers on them: DV7831-M4 - dvd board DV7700-K1 v0.1 - sd card board DV7700-A3-V1 - radio,amplifier board (has microprocessor too) I googled 'em, found them in some units made by 'Mystery'? They seem to be really close, but things like connector location, etc, seem off on some of the schemes. So, I'm thinking Pyle just rebadges these, so if I could find the original manufacturer that would help too right? Some one please let me know if I am not supposed to ask this there... Here's the scenario: Working on this Pyle PLDN70U, client blew it up (probably ran at max volume til chip amp overheated and shorted, blowing switching supply - replaced blown diode and exploded capacitor, also turn-on trace burned off of board lol)... OK, so have it up and running, all chips have correct voltages, it plays dvds, radio comes on , screen displays fine, but touchscreen isn't working. Knowing client dropped it (obvious, but 'doesn't know anything about that') checked the touch panel itself, ok, followed wires, leads, and traces, signal appears to get to the touchscreen chip, which I'm guessing outputs the touchscreen data on the I2C line, is this correct? SCL,SDA blip when I touch the screen, so it appears its happening to that point, I will setup pc-scope later to verify changing/consistent I2C data when I touch the screen in different corners change. So I'm trying to follow it, but its just spaghetti. I monitored the I2C at the microprocessor but didn't see anything, but the mcpu is on the radio/amp board, and theres a lot of other logic on the dvd board.. It's a neat little unit, has rear camera video, parking brake interlock, lots of ins and outs, etc. Chip amp is the weak link, as they claim 10 times the wattage it can produce on a 14.4 system, lol. And of course the target market goes 'oooo cheap and 300 hundred watts!!!'. And turns it up until the heatsink paste turns black (not kiding you...) Thanks for your help folks...
Ok, seems Pyle and 'Mystery' are related somehow - I found one of the boards in a MMD-4002BSG (the DV7831-M4), so I kept looking and found what appear to be the whole unit here http://mysteryelectronics.ru/2din-multimediienie-ustroiestva/422-mdd-7800bs.
I have found a scheme for it here:
Index of /home/Restricted Area/Mystery Service/CARAUDIO/Multimedia/MDD-7800BS/
which appears to contain the dv7700 boards I need.
So, anybody speak Russian? Because I'm having a devil of a time registering for this forum.
I have found a scheme for it here:
Index of /home/Restricted Area/Mystery Service/CARAUDIO/Multimedia/MDD-7800BS/
which appears to contain the dv7700 boards I need.
So, anybody speak Russian? Because I'm having a devil of a time registering for this forum.
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