[vcf-midatlantic] TRS-80 Model 4 (working) $150 - Craigslist

[Peter Cetinski]

The M4 video connector is not composite but rather hsync/vsync/dot video.  There is a composite adapter board that has been recently developed and sold on eBay.  I’ve only used it on the 8” systems where it required me to use a video scaler to properly adjust the picture size.  I’m not sure it works out of the box for the M4 but you may need at least an adjustable monitor or scaler.  You should be able to find it in the sold listings.  There is also current development on a VGA adapter for the M3/4.  That one is more exciting!

Pete

> On Dec 10, 2020, at 6:37 PM, Dean Notarnicola via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org> wrote:
> 
> I’m not sure if the M4 video is composite or TTL.
> 
>> On Thu, Dec 10, 2020 at 1:53 PM Alexander Jacocks <jjacocks at gmail.com>
>> wrote:
>> 
>> Yeah, I've watched the videos.
>> 
>> Has anyone attempted an LCD retrofit in one of the broken-neck model 4s?
>> 
>> - Alex
>> 
>> On Thu, Dec 10, 2020 at 1:50 PM Dean Notarnicola via vcf-midatlantic <
>> vcf-midatlantic at lists.vcfed.org> wrote:
>> 
>>> So many broken crt necks...
>>> 
>>> On Thu, Dec 10, 2020 at 1:48 PM Vincent B via vcf-midatlantic <
>>> vcf-midatlantic at lists.vcfed.org> wrote:
>>> 
>>>> I still need to get my Model 4 fixed up, but I hate opening the thing! I
>>>> wish Tandy had taken the Commodore PET approach and made the casing
>>> hinge
>>>> up like a car hood instead of having to very carefully lift it up and to
>>>> the side.
>>>> 
>>>> On Thu, Dec 10, 2020 at 12:32 PM Alexander Jacocks via vcf-midatlantic <
>>>> vcf-midatlantic at lists.vcfed.org> wrote:
>>>> 
>>>>> All,
>>>>> 
>>>>> I saw this TRS-80 Model 4 on Craigslist, near me:
>>>>> 
>>>>> 
>>>> 
>>> https://washingtondc.craigslist.org/mld/sys/d/bethesda-trs-80-model/7244872226.html
>>>>> 
>>>>> If anyone would like it, I'd be happy to pick it up and bring it to
>>>>> InfoAge.
>>>>> 
>>>>> Let me know,
>>>>> Alex
>>>>> 
>>>> 
>>> 
>>