VA48 Sencore schematic

I have one of these old timers and the bar sweep and color sweep section is n't working. Strangely, there are color bars over the dot and cross hatch patterns which I don't recall being a normal situation. All the switches a re clean and tight.

Anyway, I have the full owner's manual that includes maintenance and calibr ation instructions, but no actual schematic.

Does anyone have a schematic of the 500 generator board and parts layout fo r the same board? This is the only board where the component legends are n ot silk screened on the board, and there are at least 12 ICs - all 16 pins each, most of them the same number.

Reply to
John-Del
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I'm looking at restoring the same device, and am also hunting for the schematics.

I do have a PDF of the VA48 Speed Test Set-Up Booklet and would be happy to trade that for schematics...(or simply upon being asked nicely)

On the other hand I see these selling on eBay for under $100 including shipping - vs the VA62 which is the updated version for not much more and I'm not sure I want to spend the time on it...especially as I already have the Sencore 1225 which is the most advanced of their monitor analyzers...

John :-#)#

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Reply to
John Robertson

You might try asking on the forum.

Mikek

Reply to
amdx

Oh, I found a post asking for the VA48 schematic. It could even be you, first name is John! No response. :-( Mikek

Reply to
amdx

dot

Could be indeed!

John ;-#)#

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Reply to
John Robertson

Yeah, that was me...

BTW, if anyone needs any service for the VA62, *that* I have. Everything.

I technically own two VA48s now. Yep. I asked my buddy if he still had his manual and he said just take his VA48. I don't need two and I'd rather repair the one I have now.

Worse case I'll take the second one and compare waveforms between them, assuming his working fine..

Reply to
John-Del

n isn't working. Strangely, there are color bars over the dot and cross ha tch patterns which I don't recall being a normal situation. All the switch es are clean and tight.

libration instructions, but no actual schematic.

t for the same board? This is the only board where the component legends a re not silk screened on the board, and there are at least 12 ICs - all 16 p ins each, most of them the same number.

I have a few pages someone scanned, but the generator board is chopped up. Some of it is usable for some of the interconnections are not. I'll email over what I have.

Reply to
John-Del

I did some searching and didn't come up with any leads other than one post saying he got the schematic from Sencore 10 years ago for $20, but was sure what it would cost you today. Mikek

Reply to
amdx

I called Sencore, and they no longer support legacy items.

Reply to
John-Del

Ah, I have also posted on videokarma so we are both right

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Let's see if the schematics turn up!

John :-#)#

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Reply to
John Robertson

Check your email...

Reply to
John-Del

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