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                             K E N W O O D
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                        Kenwood Service Centers

   Kenwood Service Corporation             Kenwood Service Center, East
   2201 East Dominguez Street              829 Lynnhaven Parkway, Suite 130
   Long Beach, California 90801            Virginia Beach, Virginia 23452
   Telephone 1-310-639-5300                Telephone 1-804-340-1702

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BULLETIN # 61
MODEL: TS-180S
SUBJECT: TROUBLE SHEET


ALC deflection low   Replace D21 on IF unit from 7.1 to 9.0V zener.
Readjust all ALC pots.

IF #2 OUtput low   Bridge R77 position, replace R78 with R77 470 ohms.  See
TKC service Bulletin.

RX Noise (OSC CAR leakage)   Shorten L31, L33 leads as much as possible.

Increase NB effectiveness   Replace L31, L33 for 33 uh to 27uh, with SHORT
leads.

RX noise from strong signals   Replace L30 10uh on the IF with self
shielding type (new part L40-1035-21).

TX audio distortion   Adjust T15 on the IF approx 1/2 turn back, readjust
all ALC pots up.

10 M PLL unlock   change:  R77 from 6.8 K to 4.7 K ohm, R94 from 8.2 K to
6.8 K ohm on the PLL unit.

TX audio distortion   Adjust 10 W bias for 150ma, 100w bias for 100ma.

Unlocked all bands   Check L2, (Q2 B+) in the PLL unit.

FM'ing with DFC   See service bullein of 9/10 for L12, L13 change and add
resistor and shield.

40 M low alc, See bulletin #55, changes of C14, 17.