Ray Nunn, a senior producer at ABC News and executive producer of last year's award-winning documentary "Blackin White America," has left the network to join the senior production staff of the syndicated "The Jesse Jackson Show" (formerly known as "Voices of America") ...

Nunn, one of the highest-ranking black producers at a major network, will reportedly have a major role in other projects, including entertainment programming, planned by Quincy Jones Productions, which will be producing the Jackson show out of the WRC studios here starting this fall ...

Nunn was with ABC News for 12 years, during which he was a correspondent and bureau chief in Atlanta and Beirut as well as a producer ...

A spokesman for Quincy Jones Productions would not confirm Nunn's new job, but an ABC News source said the producer had asked out of the remaining months of his contract to accept the position ...

The departure of Nunn comes as representatives of the Minority Advisory Board at ABC News have requested a meeting with senior management to discuss minority concerns in the division ...

Correspondents George Strait and Carole Simpson will meet with News vice president Joanna Bistany and Amy Entelis, vice president for recruitment and development, today in New York ...

The minority board has not met with management for some 18 months. Strait said the departure of Nunn was one of the reasons the meeting was requested ...

"We're concerned," Strait said yesterday, "that ABC couldn't find a place for Ray's talent." He characterized the performance of the division in minority hiring as "a mixed bag at best" ...

An ABC News source yesterday, responding to Strait's concerns, pointed out that David Peterkin, who has been a senior producer for Fox Television's Channel 5 in New York, joins ABC News as Northeast bureau chief on Monday and that "there is a lot of minority talent in the pipeline. We'll back our record against that of the other network news divisions anytime" ...

Now This

Channel 26 management revealed yesterday that Tuesday night's edition of its "Action Series," a one-hour discussion of "politics and polarization" in the District, was the last program in the two-year monthly series ...

The programs were called "town meetings" during the 1988-89 season ...

But local public affairs fans need not despair. Staples like "Around Town" and "Metro Week in Review" are still on the schedule (pronounced "shedyule" at WETA), and Richard Hutton, the new senior vice president for production and programming, has several new projects in the thinking stage ...

They include a once-a-week primetime half-hour dealing with controversial subjects affecting the area ("we want a little more heat at WETA," is how Hutton describes it) and a proposed weekly series that would follow the problems and medical care of six pregnant area women from different backgrounds throughout their terms ...

The final "Action Series" program on racial problems Tuesday night averaged a 2.0 rating and a 4 share between 8 and 9 p.m. The decision to cancel the series was not based on the so-so ratings but rather a general dissatisfaction with the format ...

Each local ratings point represents 17,278 TV homes ...

Channel 26 yesterday also announced that an $800,000 pilot for a potential documentary series will air on PBS on Wednesday, Nov. 28 ...

The program, a co-production of WETA and David Grubin Productions, is called "The Power of the Past With Bill Moyers: Florence" ...

Moyers, as host and correspondent, explores "the roots of contemporary ideas through a series of conversations with renowned artists, authors and historians on a tour" of the birthplace of the Italian Renaissance. Moyers discusses how the works of the 15th-century artists such as Brunelleschi, Donatello, Ghiberti, Masaccio, Michelangelo and others "reflect the birth of contemporary ideas and social trends" ...

Among those appearing on the program will be author and historian Umberto Eco and director Franco Zeffirelli ...

Some $600,000 was provided by the Cigna Foundation and the Cigna insurance and financial service companies. An additional $200,000 came from the Arthur Vining Davis Foundations ...

Tuesday night represented Night II of "Quantum Leap Week" on NBC and the rerun thereof at 10 averaged an 11.6/22 in the national Nielsens, up from a 10.5/20 on Monday. Although unseen in Washington (see below), "Leap" helped the network win the night, which was all reruns on ABC, CBS and NBC (why do we think we lost you at just about the word "Tuesday"?) ...

If those Vista Hotel tapes are released at the Barry trial today, Channel 7 plans to air them in their one-hour entirety in a special edition of its "Marion Barry: His Day in Court" series at midnight tonight ...

Mandela Address

NBC-owned Channel 4 and CBS affiliate Channel 9 carried the appearance of South African leader Nelson Mandela from the Washington Convention Center Tuesday night, as both preempted two hours of network programming ...

Between 9 and 11 p.m. Channel 4's coverage of the major public appearance by the apartheid foe and his wife, Winnie, averaged a 7.2 rating and a 13 percent audience share ...

During that same period, Channel 9 averaged a 5.5/10 ...

Between 9:45 and shortly after 10 p.m., when Mr. Mandela spoke, the ratings on Four rose to an 8.0/14 during that half-hour, while Nine's audience averaged a 6.4/11 ...

ABC affiliate Channel 7, which chose not to cover the speech live on the network's most-viewed evening, averaged a 12.3/22 over those two hours. During Mr. Mandela's address, "Coach" averaged a 15.1/25, but some viewers obviously tuned to coverage from the convention center as the first 15 minutes of "thirtysomething" fell to a 10.1/18 ...

On Channel 5, the last hour of Part I of "A Rumor of War" averaged a 6.2/11 between 9 and 10, while the 10 o'clock news averaged a 6.2/11 ...

The last hour of "Tough Guys Don't Dance" on Channel 20 averaged a 2.9/5, while "Star Trek" at 10 averaged a 1.9/4 ...

Channel 7 yesterday said it had received no calls complaining of its decision not to carry the Mandela address ...

But Channel 9 reported it had received more than 200 calls inquiring about the coverage or praising its decision ...

Jeff Greenfield, political and media analyst for ABC News, is taking the summer off, starting tomorrow, to work on a book and his tennis game. He'll be back on Labor Day ...

We let this item simmer for 24 hours:

CBS Entertainment has signed Farrah Fawcett and Ryan O'Neal to star in a half-hour sitcom to premiere this season ...

"The humor, love, passion and battles of this real-life couple will be part of their relationship on the show in a unique and hopefully entertaining way for the audience," according to executive producers Bernie Brillstein and Brad Grey ...

The series is untitled ...

ABC Entertainment, which already provides primetime viewers with "Monopoly" and "Super Jeopardy!," will add "Match Game" to its daytime schedule on Monday, July 16, in the noon timeslot ...

CBS Entertainment continues to seek the last fleck of gold remaining in the Lucille Ball treasure trove ...

The network plans a movie about the lives of Lucy and husband Desi Arnaz in the days before their big TV hit so the network has put out a call for "The Great Lucy & Desi Search" ...

Actors who want to play the young Lucy (29 to 40 years old) and Desi (23 to 34) will be interviewed in three cities during July for roles in the film. If they get past an initial interview, they'll be asked to perform a one-minute favorite Lucy or Desi routine from "I Love Lucy" shows ...

The tryouts will be held July 10 at the CBS Broadcast Center on West 57th Street in Manhattan; July 16 at CBS Television City in L.A.; and at the Fontainebleau Hilton ballroom in Miami Beach on July 18 ...