[TechAssist] Re: Sanyo DS19204 no vert
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 10 Sep 2005 10:25:32 -0400
If you don't want to save the original surface mount IC, take a sharp
Exacto knife and cut off the tiny legs against the IC body, then clean
up the circuit board with wick after the IC is gone. Then flow the
solder over the pins of the new IC and then use wick to suck up the
access and then use a spy glass to check that there are no bridges
across leads.
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
Electric Medic wrote:
> John: I have to ask. How long did it take to remove install a 80 pin surface
> mount. Man that must have been time consuming. Did it remove and install and
> not pull up any runs? Also do you have a special machine to remove and
> install. All I have is my 60 watt Weller. I don't think I could handle that
> 80 pin. I do the small ones. Looks like I am going to have to get a station
> to remove and install them soon with the different heads. Pace wants 2K for
> one. Many micros and now even jungles are that big now. Good topic to see
> how most of you handle these? Comments?
>
> Perry Bower
> Electric Medic
> "It's Cheaper to Keep Her"
> http://www.electricmedic.com
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> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of John Mielke
> Sent: Friday, September 09, 2005 7:58 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Sanyo DS19204 no vert
>
>
> I just had a DS25204-01 (similar or same?) that had no vertical deflection.
> It turned out to be IC101 LA76843N, a 80 pin surface mount. Apparently this
> is a common problem, we had to wait about 2 - 3 months for the chip. I don't
> think it was expensive. Sorry, I do not have a schematic for either model.
> The vertical out on IC101 is on pin 26. The DS25204 is very similar to
> DS25320 in Sams 4801 except the DS25204 gets it's vetical B+ from the smps
> off D626 cathode and not from the fly. Let us know what you find, John.
> John Mielke
> Main TV
> 636 Main St
> Longmont, Co 80501
> 303 776 6955
> 303 776 0792 fax
> www.longmontmaintv.com
> maintv2004@xxxxxxxxxxx
> ----- Original Message -----
> From: <jhoeme@xxxxxxxxxxxxx>
> To: "Techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Friday, September 09, 2005 4:22 PM
> Subject: [TechAssist] Sanyo DS19204 no vert
>
>
>
>>Output IC501 (LA78040N) has 24V on pins 2 and 6.
>>All associated components check ok.
>>I cannot see any input pulse or ramp on input pins 1 or 7.
>>I do not have a schematic.
>>Any history on this one?
>>TIA
>>Jerry Hoeme
>>Jerry's TV Service (Estb 1978)
>>840 So. Kansas Ave
>>Liberal, KS 67901
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