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Old 09-08-2016, 07:56 PM
Zenith6S321's Avatar
Zenith6S321 Zenith6S321 is offline
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Join Date: Aug 2010
Location: Charleston, West Virginia
Posts: 303
Then
1. Pry up the EPROM


2. Insert the EPROM but be careful not to end up with a bent pin like this shows


3.The installed V1 mod EPROM should look like this


If you have a 2716 EPROM burner you can unzip the attached zip of EPROM image files and burn your own. It include a .bin, .hex, and .s format of the EPROM. Version 1 of the EPROM modification was made for the VA62. The EPROM will also work in the VA62A if you burn it to a 2732.

You can put the case back together if you do not want to put in the manual DPDT switch RF-IF signal level switch. But then the low band early TV IF output comes out at an RF level (microvolts). I recommend doing the DPDT switch mod. This is described next.
Attached Images
File Type: jpg PryUpEPROM.jpg (87.2 KB, 222 views)
File Type: jpg BentPin-2.jpg (65.4 KB, 213 views)
File Type: jpg InstallV1EPROM-2.jpg (56.2 KB, 214 views)
Attached Files
File Type: zip VA62 CD.zip (8.3 KB, 33 views)

Last edited by Zenith6S321; 09-09-2016 at 12:09 PM.
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