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Was 7633 is disassembled now 7603 alpha numeric card available?
John,Looking for the 7603 display card. Quite awhile ago I transplanted it to a friends military version thinking mine was unrepairable. But it was not. I read on here awhile back that different model
John,Looking for the 7603 display card. Quite awhile ago I transplanted it to a friends military version thinking mine was unrepairable. But it was not. I read on here awhile back that different model
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Bill (Doc) Courtright
· #164243
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Tek 2465 with Heathkit IT-1121 Curve Tracer
What I was thinking too.That little bit of horizontal deflection could be the DC voltage baseline of the CT. Either you have that channel gain set too high, or there is some bleed through voltage and
What I was thinking too.That little bit of horizontal deflection could be the DC voltage baseline of the CT. Either you have that channel gain set too high, or there is some bleed through voltage and
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Bill (Doc) Courtright
· #161048
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Tek 2465 with Heathkit IT-1121 Curve Tracer
I have the IT-1121 but have had little opportunity to fully utilize it. I use a dedicated Tek XY monitor rather than a full function O'scope and did not see the problems you are having when I last was
I have the IT-1121 but have had little opportunity to fully utilize it. I use a dedicated Tek XY monitor rather than a full function O'scope and did not see the problems you are having when I last was
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Bill (Doc) Courtright
· #161033
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WTB 7L12 + S-6 + S-52
Kyle,I am in a similar quandary. Awhile back when setting up a new bench space I powered up the 7623A that my 7L12 resided in and the MF supply went into tic mode. Pulled the SA and the MF came up fin
Kyle,I am in a similar quandary. Awhile back when setting up a new bench space I powered up the 7623A that my 7L12 resided in and the MF supply went into tic mode. Pulled the SA and the MF came up fin
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Bill (Doc) Courtright
· #157249
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464 bright screen
Problem in the horizontal drive circuit or connection to the left deflection plate off. Looks like the beam is hitting the side of the tube and spraying over the phosphor. Had a 7603 do that once. Pro
Problem in the horizontal drive circuit or connection to the left deflection plate off. Looks like the beam is hitting the side of the tube and spraying over the phosphor. Had a 7603 do that once. Pro
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Bill (Doc) Courtright
· #154511
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Looking for 604 XY monitor
Rick,Does it have to be a 604 specifically? Bill
Rick,Does it have to be a 604 specifically? Bill
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Bill (Doc) Courtright
· #153121
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Curve tracer plug-in for 500 series.-
What advantage would you be seeking of a stand alone CT? You will still need an XY displaying O'Scope. A 5CT1N in a 5K mainframe along with a horizontal amp which can be a vertical module in the horiz
What advantage would you be seeking of a stand alone CT? You will still need an XY displaying O'Scope. A 5CT1N in a 5K mainframe along with a horizontal amp which can be a vertical module in the horiz
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By
Bill (Doc) Courtright
· #144224
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When Newbies are allowed to bid on Ebay this happens
Click on the "Show automatic bids" link. What is most likely happening here is a bidder, probably Asian, possibly 3rd party bidder/shipper, has put an extremely high bid which will automatically incre
Click on the "Show automatic bids" link. What is most likely happening here is a bidder, probably Asian, possibly 3rd party bidder/shipper, has put an extremely high bid which will automatically incre
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By
Bill (Doc) Courtright
· #142183
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Wonderful color scheme
The little compartment on top held the reduced size short form operators manual. I had a 547 with that if I remember correctly. That is quite colorful. Maybe they did not want another lab group to swa
The little compartment on top held the reduced size short form operators manual. I had a 547 with that if I remember correctly. That is quite colorful. Maybe they did not want another lab group to swa
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Bill (Doc) Courtright
· #141114
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465M Blows Fuse for +32V UnReg
Hello, I have a 465M with exactly the same problem. It has been several years since it was put aside due to personal problems and now maybe I can dig it out, literally, again as soon as my back settle
Hello, I have a 465M with exactly the same problem. It has been several years since it was put aside due to personal problems and now maybe I can dig it out, literally, again as soon as my back settle
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By
Bill (Doc) Courtright
· #139785
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TM503B question
Hello, There was a 500 series rear interface manual published by Tek. I am not sure if it covers your situation. 500 series mainframe info here with a link to the manual near the bottom of the page. h
Hello, There was a 500 series rear interface manual published by Tek. I am not sure if it covers your situation. 500 series mainframe info here with a link to the manual near the bottom of the page. h
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Bill (Doc) Courtright
· #136691
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A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace
Dennis, They have the 9 pin Socket Savers. I did not see any 7 pin. Quite awhile ago there were some cheap car stereo players, maybe eve 8 tracks, I forget, I serviced them once. Anyway, they used a 9
Dennis, They have the 9 pin Socket Savers. I did not see any 7 pin. Quite awhile ago there were some cheap car stereo players, maybe eve 8 tracks, I forget, I serviced them once. Anyway, they used a 9
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By
Bill (Doc) Courtright
· #135666
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A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace
Dennis and all, Has everyone been overlooking the best source for tubes and related hardware? https://www.tubesandmore.com/products/tube_accessories Bill KB3DKS
Dennis and all, Has everyone been overlooking the best source for tubes and related hardware? https://www.tubesandmore.com/products/tube_accessories Bill KB3DKS
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By
Bill (Doc) Courtright
· #135661
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A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace
John, I posted this link earlier but it got lost. Here is what looks like a current version of what you were building and it's stand alone. www.maximatcher.com/ Bill, KB3DKS
John, I posted this link earlier but it got lost. Here is what looks like a current version of what you were building and it's stand alone. www.maximatcher.com/ Bill, KB3DKS
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By
Bill (Doc) Courtright
· #135460
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A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Tracers
Dale, I have a Hoefer Scientific PS-2500 electrophoresis supply, 0-2500 150ma or 0-1200 300ma, and a dual 6.3v filament transformer with a Variac for those odd voltages that transmitting tubes use. Fo
Dale, I have a Hoefer Scientific PS-2500 electrophoresis supply, 0-2500 150ma or 0-1200 300ma, and a dual 6.3v filament transformer with a Variac for those odd voltages that transmitting tubes use. Fo
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By
Bill (Doc) Courtright
· #135436
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7623A Readout
Brent, I have a 670-1900 01 board and cable set that might have been in a 7633 I have for parts. My plans to put it in a 7603R got disrupted and still want to put one in that frame as well as the 7603
Brent, I have a 670-1900 01 board and cable set that might have been in a 7633 I have for parts. My plans to put it in a 7603R got disrupted and still want to put one in that frame as well as the 7603
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By
Bill (Doc) Courtright
· #135075
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7623A Readout
I have successfully transplanted a readout board from a parts donor, smashed 7K mainframe into the Military 7603 version. No problems. One of the manuals has the install procedure. Did this too long a
I have successfully transplanted a readout board from a parts donor, smashed 7K mainframe into the Military 7603 version. No problems. One of the manuals has the install procedure. Did this too long a
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Bill (Doc) Courtright
· #135037
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CRT remove or excange graticule
The previous replies assumed that you were referring to the etched type graticule. There are scopes that have a blank face and a front panel mounted removable frame where the graticule of choice can b
The previous replies assumed that you were referring to the etched type graticule. There are scopes that have a blank face and a front panel mounted removable frame where the graticule of choice can b
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Bill (Doc) Courtright
· #134646
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7D01 W/DF2 and DL502 F.S.
Gentlemen, I am clearing any 7K plug ins that I no longer have a use for. I received the set 7D01 w/DF2 and the DL502 with a mainframe purchase at least 15 years ago. Thought the setup would be good f
Gentlemen, I am clearing any 7K plug ins that I no longer have a use for. I received the set 7D01 w/DF2 and the DL502 with a mainframe purchase at least 15 years ago. Thought the setup would be good f
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By
Bill (Doc) Courtright
· #134123
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R7603 Fan noise
Hello, I have an R7603 with a fan that is louder than my vacuum sweeper. Not mechanical noise just major high speed right from power on. I have not looked at the fan circuit if there is one like on so
Hello, I have an R7603 with a fan that is louder than my vacuum sweeper. Not mechanical noise just major high speed right from power on. I have not looked at the fan circuit if there is one like on so
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By
Bill (Doc) Courtright
· #133984
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