Re: Modern replacements / xref for deflection transistors

Don't let Pat lie to you.. :) He's been promising to bring me beer.. Oh
wait. Yeah he did that last week.. Never mind.

Thanks for the much needed info, as I have a few monitors I need pat to
work on :)

Kevin

On Fri, Nov 23, 2012 at 2:49 PM, Pat Danis <patdanis@verizon.net> wrote:

> Bill:
>
> Thanks for this info. Have been meaning to do this myself and was going
> to cross-reference your site before I got started but just haven't found
> the time to do it. I'm printing this stuff out to include in my binder.
>
> Pat
>
>
> On 11/23/2012 2:38 PM, wboucher6@cogeco.ca wrote:
>
>> Regarding replacing MPSU57 with MPSA56, it would be much better to use
>> MPSW92R...
>> http://www.digikey.com/**product-detail/en/MPSW92RLRAG/**
>> MPSW92RLRAGOSCT-ND/1967202?**cur=USD<http://www.digikey.com/product-detail/en/MPSW92RLRAG/MPSW92RLRAGOSCT-ND/1967202?cur=USD>
>>
>> however, an ideal replacement (much closer equivelency) component would
>> be the ZTX753...
>> http://www.digikey.com/**product-detail/en/ZTX753/**ZTX753-ND/92510<http://www.digikey.com/product-detail/en/ZTX753/ZTX753-ND/92510>
>>
>> The NPN compliment to this would be the ZTX653...
>> http://www.digikey.com/**product-detail/en/ZTX653/**ZTX653-ND/92504<http://www.digikey.com/product-detail/en/ZTX653/ZTX653-ND/92504>
>>
>> A good sub for MPSU07 is MPSW42G...
>> http://www.digikey.com/**product-detail/en/MPSW42G/**
>> MPSW42GOS-ND/1482545?cur=USD<http://www.digikey.com/product-detail/en/MPSW42G/MPSW42GOS-ND/1482545?cur=USD>
>> Also, the MPSU10 can also replace the 07.
>>
>>
>> A good press-on heatsink for the newer parts is here:
>> http://www.digikey.ca/scripts/**DkSearch/dksus.dll?WT.z_**
>> header=search_go&lang=en&**keywords=HS251-ND&x=19&y=21&**cur=USD<http://www.digikey.ca/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&keywords=HS251-ND&x=19&y=21&cur=USD>
>>
>>
>> Bill Boucher
>> http://www.biltronix.com
>>
>>
>> From: Ian Eure <ieure@mac.com>
>>> Date: Fri, Nov 23, 2012 at 2:27 AM
>>> Subject: VECTOR: Modern replacements / xref for deflection transistors
>>> To: vectorlist@vectorlist.org
>>>
>>>
>>> I managed to fry a G05 board pretty well. I swapped this working board
>>> into
>>> a dead monitor to test, turns Q608 & Q709 had been swapped and R718
>>> caught
>>> fire. Also as it happens, someone had replaced F700 on this deflection
>>> board with a 10A fuse, so while F600 blew and the Y section is likely
>>> fine,
>>> a bunch of stuff in the X section got fried.
>>>
>>> It looks to me like R718, R713, Q705, and Q706 at least are dead.
>>>
>>> Q705 is just a 2N3906, which I can get anywhere, but Q706 looks harder to
>>> come by. While I was digging around the internet, I found this incredibly
>>> great list of V2000/G05 transistors with some cross references:
>>> http://westnet.com/~chris/**arcade/g05_transistor_list.pdf<http://westnet.com/~chris/arcade/g05_transistor_list.pdf>Unfortunately,
>>> this list is a good 13 years old itself, so the parts it suggests are
>>> obsolete as well.
>>>
>>> I went looking around and MPSU57 is long discontinued, as is SK3200 and
>>> the
>>> "upgrade" NTE50 part. NTE189 is the modern replacement for NTE50, but
>>> seem
>>> to be extremely expensive ($30) when they can be found at all. I found
>>> some
>>> folks saying they had successfully substituted MPSA56 for MPSU57, as well
>>> as MPSA05 for the MPSU07 at Q607/Q707.
>>>
>>> Has anyone successfully substituted those parts? Looking at the
>>> datasheets,
>>> it seems like the tolerances are somewhat lower, so I was hoping someone
>>> could point me in the right direction. I have a few boards I want to work
>>> through, so having some of these on hand will be a big help.
>>> ------------------------------**------------------------------**
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>>> chris@westnet.com
>>>
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>>
>>
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Received on Fri Nov 23 15:51:58 2012