Jer's 400 PLWO Thread

[jbeckva]

DCP "almost" populated (dagnabit, forgot the phoenix connectors - on order... grrr)

The "veterans" out there may notice a couple of things. The caps are still .1 100v's, and those are what were called for on Don's BOM - I didn't want to re-use what was on the chassis just in case. Also note the resistors - these are non-inductive and at 4.7 ohms slightly lower, but I recall Don or someone saying that should still be "ok". We'll know when it comes time...

 

[jbeckva]

And THEN... after the EPIC battle of the century with frozen screws, beetchin' bridge rectifiers and cap clamps... I'm done for the night!



(before I keeeeeel someone... LOL!!)

 

[laatsch55]

.1 is the factory value too Jer. On the 400 board Don found it acting strangely on anything under 5 ohms. Ya gotta be over 5 Jer.

 

[laatsch55]

Did you have anything more for Zoebel resistors??

 

[jbeckva]

Did you have anything more for Zoebel resistors??

Yep, I still have the originals I can dig out and re-use, but for kicks I'm going to try seeing how these do. Remember too that the 5 ohmers that are on Don's BOM are wirewound, and carry some inductance with them - these 4.7's are strictly MOS.

 

[laatsch55]

Ok, seems Don tried non-inductive 4.7 ohmers also. Looking forward to seeing how it responds.

 

[Northwinds]

Sidenote to Ron.. whoa... all of the old drivers and the majority of the outputs were kaputz! Either blown open junctions or dead short!

Wonderful... but great job so far, you seem to be flying through this. I am seriously impressed by your know how!

 

[jbeckva]

Wonderful... but great job so far, you seem to be flying through this. I am seriously impressed by your know how!

Thanks Ron!

 

[jbeckva]

Ahh, THERE's that confounded bridge! New and now does 35 amps...

 

[laatsch55]

Damn IT JER !!!! Knew I forgot something!!!! A BABB!!!!

 

[jbeckva]

Damn IT JER !!!! Knew I forgot something!!!! A BABB!!!!

Hehe don't sweat 'er... When I saw the guts the first time, I ordered the "kitchen sink"...

minus a washer here.... a screw there.... it's the lil shit that'll get ya...

 

[jbeckva]

New caps are in with new fuse holders, and that'll complete the "power" portion...

Do I "dare" see what kind of rail voltages we'll have???? (gotum rail fuses pulled.. obviously... )

 

[laatsch55]

Hell YES!!!!!!!!!

 

[jbeckva]

Hell YES!!!!!!!!!

Okie dokie! This is still on the variac.. 120VAC in. Doc.. I think the patient's going to LIVE...

 

[laatsch55]

Not too hot, not too cold....

 

[jbeckva]

DCP - INSTALLED! (we're getting close now....)

 

[laatsch55]

Close ta wot??? Oscillation time???

 

[jbeckva]

Close ta wot??? Oscillation time???

Jo who?

JO MAMA!!

 

[laatsch55]

Well ????? Let's see it!!!

 

[jbeckva]

Well ????? Let's see it!!!

lol

After putting the RCA's back in and rewiring them with shielded cables, I've been sitting here for a good half an hour just lookin' at it...

Getting late tonight, so tomorrow we'll put in the WO board and hope for the best. Question tho... how ya mount those fancy new bias trannies that have the wires enclosed? (memory fails me on who did that? NICE job there!)

Aye, tomorrow night... we shall see!