1958 Grundig 8058 USA

[omegaman]

I got this for a reasonable amount.

Very nice physical condition.
All the back panels are there.

Mono 3D sound with Multisonic 5 band EQ

PE Rex changer with MAGNETIC cartridge

Came with a schematic. I'll also check Radio Museum

High WAF (it is smallish)

I better open it up and take a look before I power it up

I been inside German radios before

This has EL95 outputs

[AUdubon5425]

Nice looking set. I have a much smaller Majestic table radio from that era, and it's a good performer.

[omegaman]

Originally Posted by smithkhan

Do you know the SKY IR code for Grundig LCD26HDIT ?

Yes! The SKY IR code for Grundig LCD26HDIT is the code used to set your remote control

I suggest contacting the original owner or the manufacturer for info

[omegaman]

I got the photofact for it

I pulled the changer and the receiver, de-oxit'ed the volume control which was frozen.

Cleaned the tuner vanes with non-residual QD cleaner. Reset the tubes, which still had the original tape to hold them down on them.

Siemens tubes not Telefunken

No burnt or melted parts, everything looked as it was in 1958 when they closed it up

I fired it up. It works! No hum and it was getting some stations on AM

I need to de-oxit the rest of the buttons and switches

The FM dial string is broken so I get to figure that out now

All the lights work which is great

The EM34 does work but is weak

Ok, its worth investing more time and money

[omegaman]

I just spent all day re-stringing the FM tuner, what a PITA

I have all the diagrams

This was my first re-string, both wire and cord

Hard part is holding it all together and getting the spring connected

Works now and I did the clutch also

I did a more thorough cleaning of the tone bank and buttons

I emission tested the tubes on my TC-2 and both EL95 tubes test bad to awful, so I ordered new ones

I tested FM and, like AM, it sounds real garbled in the bass side. I hope that is the tubes

[OvenMaster]

Originally Posted by omegaman

BEAUTIFUL!

[wa2ise]

Originally Posted by omegaman

I tested FM and, like AM, it sounds real garbled in the bass side. I hope that is the tubes

I'd be looking to replace all wax paper capacitors. They will be leaky by now, and that leakage will upset the biasing on the audio amplifier tubes.

[Reece]

Also there's probably a non polar electrolytic or similar cap in the crossover that cuts bass going to the tweeter that needs to be changed.

[omegaman]

Originally Posted by wa2ise

I'd be looking to replace all wax paper capacitors. They will be leaky by now, and that leakage will upset the biasing on the audio amplifier tubes.

Originally Posted by Reece

Also there's probably a non polar electrolytic or similar cap in the crossover that cuts treble going to the bass speaker, that needs to be changed.

Yes! I agree. I learned all I know about vintage gear from these sites. Thanks!

I ordered all the caps but I am going to wait till I get the new tubes in before recapping the unit.

It's my Arizona electronics theory of preservation

Jeez, I had to get the EL95 tubes from Bavaria

[omegaman]

This would make an awesome looking guitar amp

[Komet]

Nice radio! I have Grundig 4088 and 5088

[omegaman]

Checking Radio Museum, It looks like your 5088 and my 8058 both use EL95's

My new EL95 tubes are in the mail

The only thing that did not test out okay was these two tubes, everything else was good

Right now I am making a three pin DIN to RCA adapter to check the tape input.

[radiodayz]

Looks great, OM. Good luck with it!

[Komet]

Yes, my 5088 uses a push-pull of EL95

[omegaman]

I completed a full recap on the Grundig 8058. 33 capacitors in all

Almost all capacitors measured about 50% over spec on my capacitance meter

German radios are assembled without consideration to future service, so I had to disassemble parts in order to get to some caps, but not too bad

Most of the caps I change get pigtails which makes it much easier to correctly place the new cap.

I just brought the two 100uf filter caps underneath (zip-tied caps in image)





I fired it up and got a shrill tone, very bad

Obviously something I did since it worked before

So I then went back to my cap list and meticulously compared each changed cap's wiring against the schematic, validating the change

At first I was suspicious of the filter caps because I had to run a ground bus and tie three caps to it and it required the most change, but nope, not it

The C90 .01uf cap that came off of pin #1 of the output tube (EL95) was soldered to the pin NEXT to the correct pin, again, very bad on my part. The schematic review worked.

I remember that I cut this cap out only to discover that I did not have this particular cap on hand so I had to leave the patient on the operating table for 3 days until I could get the new cap. Another mistake on my part

Fixed it.

I fire it up again and NO shrill sound, the unit comes up and starts receiving stations

BUT IT SOUNDS JUST LIKE IT DID IN THE BEGINNING, MUDDLED TONE

Now I am going to pull the receiver and meticulously check EVERY resistor

I also found another very well hidden .0068 500v cap in the tone circuit as well as a 20uf 50v Non Polarized cap on the speaker wiring