Re: Help with Bentek DMC BP-200AD Power Supply
Q4 and Q5 Test results...
Q4 Pin 2 to Pin 1 - 728
Pin 2 to Pin 3 - 652
Q5 Pin 2 to Pin 1 - No reading
Pin 2 to Pin 3 - 630
So I guess Q5 is no Good and Q4 is good.
No Problem I'm supprised you would have time to look at this at all during this week....
grzesiek
Member
Last Activity: 12-28-2012, 11:20 AM
Joined: 01-01-2011
Location: Drummond Island, MI
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Re: Help with Bentek DMC BP-200AD Power Supply
Pics Of Q4 and Q5 attached
Numbers As I see them...
Q4 - KSP 2222A - F32
Q5 - KSP 2907A - 326
***EDIT***
I just noticed... 8 of the 11 digits of Q5 match what remains of Q6. Is it possible (likely) thay are the same part?
Q6 - ?SP ??07A - 326...Last edited by grzesiek; 12-21-2012, 07:44 PM.Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
You're right about R18... Head math I was thinking value was off by 10%, I see now only 1%
I coded R16 at 2Kohm (Not good), and I agree it's toasty, I think for the price it's worh replacing.
Your right R23 is a 100K ohm, and I typed result incorrectly, it measures 100.9K Ohm (in circuit).
Any hints on how to test Q4 and Q5.
***EDIT*** Just noticed request for part#'s/Pics of Q4 and Q5... Info to follow.
Do you need more information...Last edited by grzesiek; 12-21-2012, 07:34 PM.Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
So Here's My results...
D17 - 595
R16 Pic Attached - 998 (not good I think)
R18 Pic Attached - 989 (Not good I think)
R25 - 75 Ohm - Good
R22 - 10.2 Ohm - Good
R23 - 100.9 Ohm - Good
D7 - 486
D8 - 482
D9 - 483
I don't know how to test Q4 and Q5....Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
I've attached a Pic of Q6.
So Far R22 R23 and R25 tested Good.
I've yet to test R16 and R18. D7 D8 D9 D17 Q4 and Q5. I want to take them out of the board. I'll get on that tomorrow....Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
Readings from Q1 on 200ohm scale
Pins 1-2 - .5
Pins 1-3 - .4
Pins 2-3 - .4
Reading from D3 Diode test mode
380
I started putting together a shopping cart on Mouser, and stopped. I notice there are several different FAN7527B IC's, and Resistors (RS1 RS2) have a number of Watt values. I don't think the FAN7527B matters(?) but I'm thinking it will matter for the other components. You are doing so much already, I hate to ask, but I'll need help putting...Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
I restested Doides D4, D5, D15, D16 and the readings are '000' not '1'...Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
Glad I posted those pics. I really struggled with the colors of the bands.
By the way... the back (flat) side of Diode Q6 is blowen out as well
Yes that was both forward-biased and reverse-biased.
D19 (in board) - 589 Forward, No reading reverse
D20 (in board) - 589 Forward, No reading reverse
BD1 (in board) - 493 and 508 (depending on pin) forward, no reading reverse
For my meter '1' is no reading (probes not touching...Last edited by grzesiek; 12-17-2012, 08:27 AM.Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
Reading R6 as Brown, Red, Black, Gold, I agree. I saw the first band as Red and the second as orange (old eyes).
Reading R22 as Brown, Black, Black, Gold, I agree. I saw the first band as orange (old Eyes).
Thanks for looking. After looking at the photos again, I agree, R6 and R22 are likely good....Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
Correction R8 test value was .768M Ohm
Also, I think I mis-identified them. I'm thinking they are 760k Ohm 1%.
If this is correct, then they are very close to 'Good'....Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
OK. I removed all of the bellow...
D4, D5, D15, D16, Q5 ,Q6 ,R2 ,R3 ,R5, R6 ,R7 ,R8 ,R9 ,R22 ,RS1 ,RS2
All of the Diodes tested 'Not Good'
Only Resistors R5 and R55 Tested 'Good'
Here Are the values I coded the Resistors as and their Tested Values.
RS1 - .24 Ohm 5% - Open
RS2 - .24 Ohm 5% - Open
R2 - 23k Ohm 10% - Open
R3 - 23k Ohm 10% - Open
R5 - 22k Ohm 5% - 22k Ohm
R6 - 23 Ohm 5% - 12.3 Ohm
R7 - 28k Ohm 5%...Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
Forgot to post Pics...Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
No need to appologize. I always take basic safety precautions when working on most anything. You need not feel responsible for not stating the obvious.
Do you mean stuff like wall chargers and adapters for other devices? If so, Yes. If not could you be more spicific?
Attached are pictures of the casing of the C22 Capacitor, as well as one of IC3. So no problem with Identification, but the part number of IC3 is 5M0365R.
I'll get on the next set...Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
I desoldered R22. Not sure what happened, but when I put the meter probes on pins at CN2, the Capacitor at c22 exploded. After catching my breath, testing the pins, I'm now at 1.25VDC.
I didn't find D2. There is a D7 in that area, is that what you ment, or did I just miss it?
Both joints apear solid.
168.9 - 170.0 VDC...Last edited by grzesiek; 12-15-2012, 07:46 PM.Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
I'm only getting 3.25VDC.
It's been a year, but I replaced the Capacitor there, and as I recall the discoloration was there then. This will be the 4th time this board has been worked on (twice by MFG), I did that Capacitor....Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
The meter is a GB Instruments GDT-11. Manual Ranging.
I have all that... 45 watt soldering iron, solder, paste flux.
My reading varies a bit, but the 450V Capacitor is 169VDC (168.5 - 169.2)...Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
momaka... Thanks so much.
I would like to try to fix this board. If for no other reason, than to say I did. In the name of 'Full Disclosure' I have very limited experience with electronics repair. So if you are still willing to help, you may have to be more detailed than you are used to.
I do have a multimeter (ACV, DCV, AC Amp, and Continuity). I am familiar with its use, but this will be far more technical than I have utilized it for. Is this sufficient for this project? If not what will...Last edited by grzesiek; 12-15-2012, 09:05 AM.Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
Still trying to research a fix for this TV. I noticed on ebay there are a LOT of tv power supplies for sale. Of course none for mine. But it did get me wondering... if there is another TV manufacture that used a board with the same specifications that could be made to work.
Here are the Specs of the BP-200AD.
[COLOR="Red"]Input Voltage
- Normal Voltage : AC 100-240 Vrms
- Voltage Range : AC 90-264 Vrms
Input Frequency
- Normal Frequency : 50-60 Hz
- Frequency...Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
momaka,
Thanks. I'd be willing to try a ghetto fix, That's better than no fix.
I've attached a few more Pics... Is there any thing in paticular you need to see?
The Upload seems to be compressing them, I can RAR them if you like....Leave a comment:
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Re: Help with Bentek DMC BP-200AD Power Supply
Tom,
I'd hate to toss this TV. Would you have any suguestions as to what to do?Leave a comment:
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