Re: What's this pcb for the speaker tabs made out of?
Yeah, but I still need to find a way to reattach the two halves of the board. Broken right next to the rivet and the negative side just hands unattached.
Found a new board with the proper sized tabs for the two different sized spade connectors on the two wires (positive and negative) for 3$ plus like 4$ shipping.
Once he calls me back, I'll order it. Not sure how hard it'll be to rivet on. I have a rivet gun, so hopefully, it'll be easy. My rivets are round, this one is square,...
Spork Schivago
Badcaps Legend
Last Activity: 07-07-2019, 11:40 AM
Joined: 03-03-2012
Location: Corning, New York
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Re: What's this pcb for the speaker tabs made out of?
The speaker is not outside the enclosure, so that's not the reason. The speaker is in an enclosure, just a box. Then he has this thing he calls a head. The head allows him to easily hook his instrument(s) into the speaker. For whatever reasons, he removes this head frequently. Originally, I thought it was because he was hooking another head up to it, and that could be the reason. But it might have to do with moving it. I guess they travel a lot playing in some band.
I like the PCB idea and...Leave a comment:
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Re: What's this pcb for the speaker tabs made out of?
I should add that he said he switches the head regularly. I have tried super gluing the two pieces of the board together, but it doesn't seem to be holding. Perhaps if I let it sit over night. If I do repair the board, it needs to be sturdy enough to handle the positive and negative ends of the head from being plugged in and removed.
*EDIT: I believe I have found a replacement part, albeit a different colour. I will contact the owner and see if he is okay with a different colour. If not, perhaps it's time to...Last edited by Spork Schivago; 04-13-2019, 04:43 PM.Leave a comment:
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Re: What's this pcb for the speaker tabs made out of?
In that picture I took, you cannot see it, but the actual board is broken in half. Replacing the broken tab shouldn't be hard and soldering it in shouldn't be hard. It's much skinner than the positive side. But the board is two pieces. I was thinking maybe trying to glue it together, I dunno....Leave a comment:
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Re: What's this pcb for the speaker tabs made out of?
Yup. I ran some ideas across the owner of the monitor. I think he called it a monitor. It's so when the band he's playing with is playing a gig, as he calls it, he can hear what he's playing. He said the big speakers that face the audience are too loud, so they stay behind them and use those little speaker cabinet things he called a monitor to hear their sound.
He specifically wants that little board replaced, I don't know why. This guy, you should have seen him. He really looked like a rock...Leave a comment:
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What's this pcb for the speaker tabs made out of?
Hi! Does anyone know what this PCB is made out of? The one that the speaker wires plug into? I was thinking of just etching a new PCB and riviting it down where this one was, but don't know enough about speakers and thought maybe it had to be something special, like made out of ceramic.
Thanks!... -
Re: Dim Mitsubishi WD-73738 DLP Telivision
Thanks guys! It's not my TV, just one a guy brought me to fix. Pretty good gig right now. He brings them, I fix him (he pays for the parts), he sells them, we split the profits (minus price for parts). Working pretty good right now. Lot of work, usually easy fixes, but now we get some Samsungs that are not so easy to fix. Beautifully built, but hard to diagnose.Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
I did not know laser / LED based units where available. That is amazing, they can do 4k with DLP technology. Even the 1080 impressed me. That's one little tiny mirror per pixel, correct? So over 2 million mirrors in a little tiny chip for this TV. Insane!
And yeah, it seems people want thin right now. I've seen on Samsung's site some of their new Always-On TVs, where when you're not watching TV, the TV looks like a painting or something just hanging on the wall. Kinda nice I guess, but more money than...Leave a comment:
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Re: Help finding resistor for Craftsman 82357 R41
For this, I think I'd get more bang for my buck going used. I was hoping I wouldn't have to go over 800$, but being used, I want a traceable calibration. DMM don't do me no good if it isn't calibrated.
If I found a good one for, let's say, 200$, I'd buy it! I just don't really want to go over 800$ right now....Leave a comment:
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Re: Help finding resistor for Craftsman 82357 R41
What's the VFD? I want a nice benchtop multimeter, calibrated, certified. I figure eBay would be the source, and I'd get traceable certification for it. I was looking at some HP and Agilent ones. I had one in mind a few years back, but cannot remember which one it was....Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
So that uses LED for a light source? Is it possible to somehow modify another make / model, such as this Mitsubishi, to use the LED optical engine? If so, I'd like to do that very much so. This mercury lamp is putting out soooo much heat, it worries me....Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
There was definitely a short between the wires, the way they were twisted. Man, that was a hard fix. I mean, the fix itself was easy. Unsoldered the three wires, cleaned the board, chopped off the bad parts, soldered new black, yellow, and red wires on, used heat shrink tubing to insulate them, twisted them the best I could, then soldered the new wires back to the board.
Worked like a charm and the TV appears to be working properly now.
The lamp energy level is set to Bright. Contrast is all the way up to 63...Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
I think the Red and Yellow wires being shorted out is what's throwing the 0061. It might be hard to tell from the pics, but the yellow, red, and black are all twisted together, and the yellow and red have the insulation melted off about equal distances, both shorting out. The way it was wrapped, it wasn't like a full short, it was like eh, they could be touching, they might not be touching. I think this made it intermittent.
The colours on this wheel are (in this order):
Blue
Red
Green...Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
Yeah, I don't understand how the colours could possible have looked right. That's why I was ruling out the colour wheel, because I did various tests, such as looking at the TV from an angle, and it was fine. Two of these wires, the Y and R ones, are shorting out. I can't see how the picture could have displayed properly at all. I understand why this would have caused the input source to cycle, but I cannot for the life of me understand how the picture was being displayed properly with the short.......Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
I'm going to do that. I'd love to replace the wires, rather than splicing into them, but I cannot identify the connector on the end, nor can I find my caliper, which would greatly help.
Unfortunetly, I think cutting out the bad, putting new wire in is the way I gotta go with this. I've been reading, and some people with similar DLPs (not the exact same model, but close) say there's a heating issue where the colour wheel is, and it damages the wires and the photointerrupter. They replace the photointerrupter...Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
What do you guys think? Having hard time finding a replacement PCB. Was thinking the photointerrupter is probably good, because we get a picture sometimes. Figured maybe those two wires, Y and R, being shorted out is causing the issue, and if I could not find a replacement board, perhaps I could somehow replace the wires. The connector that plugs into the DMD board (the one that comes off this photo sensor PCB) isn't really a common one. I have a bunch of different connectors that I save, just in case I need to replace one, but this...Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
Holy cow! I think I _FINALLY_!!!!! figured out the problem! I was looking at colour wheels on eBay for this TV, trying to find a part, because internet says for Mitsubishi 2011 model DLPs, 0061 is Lamp Enable Not Issued and the reason is Possible bad Colour Wheel.
I seen on ebay they got this tape or glue or something on the middle metal spinning disc (that the colours attach to). I thought maybe that had come off. Some wheels on eBay said if the black tape wasn't at the right colour as the original wheel, to move it to...Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
That makes sense. A warm-up period....Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
I believe the menu is also darker, but I will have to verify. Right now, I couldn't get the video to stop cycling, regardless of what HDMI input I had it on, however, I wasn't able to test the other input types, such as RCA. However, I believe the HDMI ports weren't causing this problem, because the OSD (menu) would cycle with it. I hit the menu button on the remote control, not the physical TV. I think once this problem is fixed, perhaps the brightness will be fixed. But where to start with this problem? I don't know...Leave a comment:
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Re: Dim Mitsubishi WD-73738 DLP Telivision
Okay, then I am in the wrong setting. I must have been in picture mode. I am thinking there are two problems here and they are probably very much related. I am thinking of holding off on trying to figure out the dimness, until the other problem is fixed.
The other problem is the video keeps resetting. The backlight stays on, that is, the lamp does not turn off, and this problem might occur only when the TV is dim, or it might occur when it's bright or dim. The video source, including the sound, cuts off...Leave a comment:
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