Job Number

0206-54

Equipment type

Television

Maker + Model #

Grundig CUC-720

Made in

Germany

Client Info

George Mifsud, Santa Venera, 21238796

Date in

Xx June

2002

Date of repair

Xx June

2002

Date out

Xx June

2002 (fixed in place)

Comments

Already reported a problem in sound few months ago.

BAD

1

 Weak sound, but then OK after warmup

2

 Shivering picture, but OK after warmup.

3

GOOD

1

 Good raster, deflection, sync and tuning of channels.

2

Full repair description and observations

1

 The main quarrel about the TV was the shivering picture, which I believed was the 470uF, 10V capcitor in the tuner. I replaced this capacitor, but there was no improvement at all.

2

 Then I replaced the whole tuner, to be sure that the shivering was from the tuner not some sync problem. The picture, but also the sound, came perfectly good with the replaced tuner.

3

 Later on, it was discovered that there is a pot in the tuner box, which controls the volume gain. When the pot was adjusted the sound came high on testing this tuner on another Grundig

4

 Regards the shivering, I replaced the other electrolytics, and resoldered most points fro possible dry joints, but no success yet… maybe the tuning ICS?!

Repair summary

Tuner Malfunction, Tuner sound preset was adjusted low

1

I paid LM5 for repair of the tuner, but it is still not repaired (I don’t know what he did to it, I presume nothing but just got the LM 5 for nothing else than resoldering some dry joints)