Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

The Fisher 200-T
#1

Here we go with yet another vintage receiver restoration.

[Image: http://www.philcoradio.com/images/phorum...0T_001.jpg]

This Fisher model 200-T is a 1968 model and is rated at 20 watts per channel. It's new enough that it uses all silicon transistors. It is unusual in its symmetrical design, more like its larger (and older) tube cousins.

This particular one was still working, but one channel is a little bit weak and it is past due for some electrolytic replacements - everything inside is still original.

[Image: http://www.philcoradio.com/images/phorum...0T_002.jpg]

I plan to replace all electrolytic capacitors in the power supply and audio output sections, along with the four rectifiers, and go from there.

I know some of you are wanting to ask, Why don't you leave the original rectifier diodes in place?

Here's why:

[Image: http://www.philcoradio.com/images/phorum...0T_003.jpg]

It's going to take some serious heat to unsolder all of those diodes from the main filter electrolytic. New rectifiers are cheap, so I am not going to take any chances on ruining the old ones - it's easier to just replace them.

--
Ron Ramirez
Ferdinand IN
#2

 Looks like a nice receiver. The components underneath look to be easily accessible.
Anything on top need replaced?
#3

If a channel is weak that's a tell-tell for a bad output lytic cap. After full recap it should work fine.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#4

(04-09-2016, 10:40 AM)Mike Wrote:  Anything on top need replaced?

The audio output coupling capacitors (electrolytics) are mounted on top, and will be replaced.

I've already replaced the dial lamps with LEDs. I will probably replace the Stereo Beacon with an LED. But that won't happen until I've done the other work I have planned for this receiver.

--
Ron Ramirez
Ferdinand IN
#5

Okay!

Turning to the top of the receiver, I replaced the old Black Beauty cap that was connected between one side of the AC line and ground with a new safety X1-Y2 cap; also replacing the 820K resistor in parallel with that cap.

I nociced some 5W resistors were covered with some weird powdery stuff...

[Image: http://www.philcoradio.com/images/phorum...0T_004.jpg]

...so they were replaced.

--
Ron Ramirez
Ferdinand IN
#6

Next came replacement of the two audio coupling electrolytics.

I cut open each can and installed a new Nichicon "Fine Gold" audio grade cap in each can...

[Image: http://www.philcoradio.com/images/phorum...0T_005.jpg]

...then glued the cans back together...

[Image: http://www.philcoradio.com/images/phorum...0T_006.jpg]

...and, finally, reinstalled the restuffed cans and reconnected the wires.

[Image: http://www.philcoradio.com/images/phorum...0T_007.jpg]

--
Ron Ramirez
Ferdinand IN
#7

Success...

[Image: http://www.philcoradio.com/images/phorum...0T_008.jpg]

After replacing the audio coupling capacitors, I tried the unit out on headphones and it sounded fine, so I decided to button it up and go no further with it.

The Stereo Beacon is still the original incandescent bulb. I took some voltage and current readings in order to plan for a future LED Stereo Beacon conversion. The multiplex adapter receives +15 volts from the power supply; this voltage drops to near zero at the multiplex adapter when a stereo signal is tuned in. I measured 28 mA being drawn by the incandescent bulb.

So that is it for this Fisher 200-T. It is good when repairs are this easy.

[Image: http://www.philcoradio.com/images/phorum...f/easy.jpg]

Icon_thumbup

--
Ron Ramirez
Ferdinand IN
#8

 Should be good to go for many more years. Icon_thumbup Icon_thumbup
#9

As it turned out, it really wasn't fixed.

https://ronsradios.com/2020/08/21/the-fi...-receiver/

It is now.

--
Ron Ramirez
Ferdinand IN




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM

[-]
Who's Online
There are currently 818 online users. [Complete List]
» 2 Member(s) | 816 Guest(s)
AvatarAvatar

>