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:
[-]
Recent Posts
Philco 91 Restore Code ??
I have changed the title of this thread from Philco 91 Schematic. I have gone through most of the cap replacements. I...dconant — 01:26 PM
462ron
Here is an online transistor substitution site… Ron462ron — 08:44 AM
1930s Stewart-Warner Tombstone Radio need help identifying model number
One way to repair a broken wire on a coil is to take a copper strand out of some 18 gauge electrical cord, make a &quo...captainclock1988 — 12:55 AM
B&K 1077B no video
Hello Tim, I once had a Jcpenny 13inch tv /monitor built by NEC come into my repairshop it would start acting up at tim...radiorich — 10:59 PM
Restoring Philco 96
Mike; The last time I took a potted condenser can apart, and it was maybe 1/4 the size of the one in the model 96, I ...Arran — 10:56 PM
Compatible crts
Bob Andersen — 08:58 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
One way to repair a broken wire on a coil is to take a copper strand out of some 18 gauge electrical cord, make a "...Arran — 08:41 PM
Restoring Philco 96
Have just aligned it. Surprisingly, it was not that much off at all. Barely. Aligning TRF sets is pure pleasue, as ther...morzh — 07:52 PM
6TPZ and 5TPO Radio Help
1 - 0v - correct 2 - 0v - correct 3 - 0v - --------------------- both 3 and 4 should be the same. Check L2 for being ope...morzh — 05:15 PM
B&K 1077B no video
I'm going to get back into it tonight. but I disconnected the 2 main resistors off this supply going to different parts ...TV MAN — 04:04 PM

[-]
Who's Online
There are currently 5776 online users. [Complete List]
» 1 Member(s) | 5775 Guest(s)
Avatar

>