Phase Linear 4000 Series two.

e30m3mon

e30m3mon

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I got bored one Wintry, snowy night and de-soldered all the components (many were renewed some time ago) from my PL 400-II board. Only one foil lifted but an unused hole and pad a little past the lifted foil can be used for that one device (diode). You're welcome to the board if you think it is in better shape than yours and if you're going to re-populate with new parts .... might as well consider this one.
 

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VSAT88

VSAT88

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#64
MusicSteve said:
Not really,
I very impressed w you taking the wires off! (brave) I been in the Machine Building world forever and some times you have to think outside the box.
Click to expand...
Think I know what you mean by no wires now. Each one I have done I took the board out of the unit. Well, maybe that is not a good idea but it is the solution I have used so far. Sounds like I may well need another board before I am done @e30m3mo
 
e30m3mon

e30m3mon

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VSAT88 said:
Think I know what you mean by no wires now. Each one I have done I took the board out of the unit. Well, maybe that is not a good idea but it is the solution I have used so far. Sounds like I may well need another board before I am done @e30m3mo
Click to expand...
You're welcome to it ... PM me where to send it and I'll include the parts off it too.
Al
 
VSAT88

VSAT88

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To be perfectly honest it does look a lot better than mine. I will send you a PM in just a bit. Thank you Al. now that I know your name right.
 
MusicSteve

MusicSteve

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VSAT88 said:
For the two 7.5k ohm resistors (2 watt) at R101 and R404 is it ok to use wire wound resistors ?
Click to expand...
R1 and R2 are 7.5k 5watt mouser Part# https://www.mouser.com/ProductDetail/660-MOS5C752J
R101 and r201 are 7.5k I used 3w https://www.mouser.com/ProductDetail/660-MOS3C752J
I use the Metal Oxide Film Resistors
the other resistors if go want go to Parts express they have a clearance sale 1/2watt and 1 watt but 5%
(10 for $1.09) I have a bunch of 1 watt still in my chart
https://www.parts-express.com/electronic-parts/resistors-potentiometers/metal-oxide-resistors
I hope this helps
 
Gepetto

Gepetto

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#68
e30m3mon said:
I got bored one Wintry, snowy night and de-soldered all the components (many were renewed some time ago) from my PL 400-II board. Only one foil lifted but an unused hole and pad a little past the lifted foil can be used for that one device (diode). You're welcome to the board if you think it is in better shape than yours and if you're going to re-populate with new parts .... might as well consider this one.
Click to expand...
You must have been really board (ha) that day Al
 
VSAT88

VSAT88

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#70
MusicSteve said:
R1 and R2 are 7.5k 5watt mouser Part# https://www.mouser.com/ProductDetail/660-MOS5C752J
R101 and r201 are 7.5k I used 3w https://www.mouser.com/ProductDetail/660-MOS3C752J
I use the Metal Oxide Film Resistors
the other resistors if go want go to Parts express they have a clearance sale 1/2watt and 1 watt but 5%
(10 for $1.09) I have a bunch of 1 watt still in my chart
https://www.parts-express.com/electronic-parts/resistors-potentiometers/metal-oxide-resistors
I hope this helps
Click to expand...
Steve, you quote this above.
7.5k 5watt mouser Part# https://www.mouser.com/ProductDetail/660-MOS5C752J
R101 and r201 are 7.5k I used 3w https://www.mouser.com/ProductDetail/660-MOS3C752J

The schematic I have shows R1 and R2 at 1.8K/5W and R101 and R201 at 7.5K. ? Is there something I am missing?
 
Gepetto

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MusicSteve

MusicSteve

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VSAT88 said:
Steve, you quote this above.
7.5k 5watt mouser Part# https://www.mouser.com/ProductDetail/660-MOS5C752J
R101 and r201 are 7.5k I used 3w https://www.mouser.com/ProductDetail/660-MOS3C752J

The schematic I have shows R1 and R2 at 1.8K/5W and R101 and R201 at 7.5K. ? Is there something I am missing?
Click to expand...
Might not want to take to much stock into the Drawing since they had a lot of different ones out their.
Are you using the LM351 Op-Amp? If Yes
Here is the update Service Bulletin for the LM351
 

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VSAT88

VSAT88

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Was going to run LF356N Op Amps. That is what I had on order anyhow. I wanted to replace both as well as put new sockets on. Now I don't know what resistors to use ! Looks like 7.5k ohm in both slots :)
 
MusicSteve

MusicSteve

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#75
VSAT88 said:
Was going to run LF356N Op Amps. That is what I had on order anyhow. I wanted to replace both as well as put new sockets on. Now I don't know what resistors to use ! Looks like 7.5k ohm in both slots :)
Click to expand...
Its harder to find the LM351 (which are better)
 

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